Nitecore Accessory NWS10 Titanium Alloy 120dB Whistle

Features:

• Constructed from polished TC4 titanium alloy for durability and aesthetic appeal
• Biocompatible, making it nontoxic to humans
• Corrosion resistant, sturdy, and durable
• 'Uni-Body' construction is portable and extremely lightweight
• Ultra lightweight at only 4.7 grams
• Single-chambered design emits a high-pitched frequency for further distance
• Maximum sound intensity of 120 decibels
• Perfect for outdoor events, sporting events, security, and law enforcement
• Utilizes a precision Teflon resonator, high or low temperature-resistant
• Simple and highly functional design
• Works in wet or dry conditions
  

See in the official website: https://flashlight.nitecore.com/Product/nws10