This Palm 40 Whistle has a three-chamber design with no moving parts and can produce up to 110 decibels. Its sound can be heard well above man-made and environmental noise to attract attention in an emergency.This safety whistle fits neatly in a pocket or is attached to a life jacket.May be supplied in a different colour to the images depending on stock.FeaturesPatent 3-chamber designIncludes lanyardPenetrating 110 decibelPealess faultless performanceSpecificationsMaterial: Injection moulded plasticCertification: ISO 12402-8Weight: 0.01 kgISO certifiedThese PFD’s pass ISO 12402-5 (water sports) and ISO 12402-6 (paddle sport) standards. The majority of our PFD’s have up to 20% more buoyancy than the ISO/CE standard and our whitewater models have up to 40% more buoyancy than the 50 N required. Palm were the first to make PFD’s to these ISO standards.