{"product_id":"referee-whistle-molten-valkeen-ra0030-ks","title":"Referee whistle MOLTEN Valkeen RA0030 KS","description":"\u003ch2 id=\"\" class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003e\u003cstrong\u003eMolten VALKEEN RA0030-KS – The Professional's Choice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eThe whistle trusted by elite referees worldwide.\u003c\/strong\u003e The Molten VALKEEN is a revolutionary, pealess referee whistle engineered for maximum performance in outdoor and stadium environments. Backed by years of intensive research and over 100 prototypes, this Japanese-designed whistle delivers uncompromising sound quality and ergonomic control.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eSuperior Sound Engineering\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDual-Frequency Technology for Unmatched Clarity\u003c\/strong\u003e\u003cbr\u003eThe VALKEEN produces a distinctive \u003cstrong\u003edual-tone sound\u003c\/strong\u003e through two precisely calibrated resonance chambers operating at \u003cstrong\u003e4.15 kHz and 3.67 kHz\u003c\/strong\u003e frequencies. This creates a unique harmonic beat and interference pattern that generates a clear, penetrating \u003cstrong\u003e125-decibel blast\u003c\/strong\u003e—delivering exceptional range across expansive playing fields and crowded stadiums.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/intheopinionofthereferee.com\/2013\/09\/05\/gear-review-molten-valkeen-whistle\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePealess, Reliable Design\u003c\/strong\u003e\u003cbr\u003eWith no moving internal parts, the VALKEEN eliminates jams, freezing, and unpredictable failures, ensuring consistent performance regardless of weather conditions or intense game action.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Referee whistle MOLTEN Valkeen RA0030-KS\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eErgonomic Flip Grip System\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe revolutionary \u003cstrong\u003eFlip Grip mechanism\u003c\/strong\u003e is included in three adjustable sizes, allowing referees to secure the whistle between their fingers for instant access and confident control during dynamic, fast-paced matches. This innovative design keeps the whistle stable even during sweaty, rain-soaked conditions, enabling referees to maintain focus on the game rather than their equipment.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWider, Anti-Bite Mouthpiece\u003c\/strong\u003e\u003cbr\u003eThe specially designed mouthpiece provides superior comfort during extended use and includes an anti-bite guard for protection.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/www.refereerecorder.com\/product\/whistle-molten-valkeen\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003ePremium Durability\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eConstructed from \u003cstrong\u003ehigh-grade polycarbonate with steel components\u003c\/strong\u003e, the VALKEEN is built to withstand the rigors of professional and semi-professional competition, offering exceptional longevity and resistance to wear.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltenusa.com\/valkeen-whistle-with-flip-grip\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1x Molten VALKEEN RA0030-KS Whistle (Black)\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Whistle Molten Valkeen RA0030KS HSTNK000008323\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e3x Adjustable Flip Grip Finger Holders (sizes: Small, Medium, Large)\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/intheopinionofthereferee.com\/2013\/09\/05\/gear-review-molten-valkeen-whistle\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1x Standard Lanyard\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eElegant retail packaging—ideal for referees and enthusiasts\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltenusa.com\/valkeen-whistle-with-flip-grip\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"group relative\"\u003e\n\u003cdiv class=\"w-full overflow-x-auto md:max-w-[90vw] border-subtlest ring-subtlest divide-subtlest bg-transparent\"\u003e\n\u003ctable class=\"border-subtler my-[1em] w-full table-auto border-separate border-spacing-0 border-l border-t\"\u003e\n\u003cthead class=\"bg-subtler\"\u003e\n\u003ctr\u003e\n\u003cth class=\"border-subtler p-sm break-normal border-b border-r text-left align-top\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"border-subtler p-sm break-normal border-b border-r text-left align-top\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003eRA0030-KS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eSound Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e125 dB @ 10cm\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Whistle Molten Valkeen RA0030KS HSTNK000008323\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eFrequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e4.15 kHz \u0026amp; 3.67 kHz\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Whistle Molten Valkeen RA0030KS HSTNK000008323\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e4 octaves\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Whistle Molten Valkeen RA0030KS HSTNK000008323\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003ePolycarbonate \u0026amp; Steel\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan aria-label=\"Whistle Molten Valkeen RA0030KS HSTNK000008323\" data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eDesign Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003ePealess, dual-chamber\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eMouthpiece\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003eAnti-bite, wider design\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/mybrand.shoes\/en\/sports-soccer-referee-coach-equipment\/219797-whistle-molten-valkeen-ra0030-ks-hs-tnk-000008323.html\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003e\u003cstrong\u003eIntended Use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"px-sm border-subtler min-w-[48px] break-normal border-b border-r\"\u003eProfessional outdoor and stadium settings\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bg-base border-subtler shadow-subtle pointer-coarse:opacity-100 right-xs absolute bottom-0 flex rounded-lg border opacity-0 transition-opacity group-hover:opacity-100 [\u0026amp;\u0026gt;*:not(:first-child)]:border-subtle [\u0026amp;\u0026gt;*:not(:first-child)]:border-l\"\u003e\n\u003cdiv class=\"flex\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"flex\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"flex\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eWhy Professional Referees Choose the VALKEEN\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe Molten VALKEEN has become the standard for elite soccer referees, handball officials, and floorball arbiters worldwide. Its combination of sophisticated sound engineering, innovative grip technology, and uncompromising durability makes it an investment in professional officiating excellence. Unlike standard whistles, the VALKEEN requires finesse and technique—rewarding experienced referees with superior control and tonal variety from simple fouls to match-defining decisions.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/www.refereerecorder.com\/product\/whistle-molten-valkeen\/\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCrafted by Molten Sport (Japan) | Delivered in premium packaging | The choice of professional referees\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan data-state=\"closed\" rel=\"nofollow noopener\" class=\"citation inline\"\u003e\u003ca href=\"https:\/\/moltensport.pl\/football-referee-whistle-molten-valkeen-with-flip-grip\" class=\"inline\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Molten","offers":[{"title":"Default Title","offer_id":43720963752029,"sku":"SRT0110","price":470.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/9116\/6557\/files\/referee-whistle-molten-valkeen-RA0030-KS-fron.jpg?v=1775787308","url":"https:\/\/www.refereetools.com\/de\/products\/referee-whistle-molten-valkeen-ra0030-ks","provider":"Referee Tools","version":"1.0","type":"link"}