Nitecore NWS20 Titanium Whistle Keychain It is typically described as

It is typically described as having the strength of steel with a weight comparable to aluminum

the INOVA XP is powered by 2-AAA alkaline batteries (included)

NL2140 4000mAh 21700 Rechargeable Battery

Battery Life

SU-16A & B (closed)

Nitecore NWS20 Titanium Whistle Keychain It is typically described asThe Nitecore NWS20 Titanium Alloy Whistle is the most efficient whistle in its class. It is constructed from lightweight polished titanium allow and features a teflon resonator. At only 12. 6 grams, the Nitecore NWS20 emits maximum decibels with minimum effort. Wet or dry, the NWS20 works flawlessly, making it perfect for outdoor events, sporting events, security and law enforcement. Features: Constructed from TC4 titanium allow for durability and