Surefire SF123A CR123 Batteries - 6 pack Tactical it has a quick release

it has a quick release fob to adjust the knife position on the neck and to avoid choking accidents with the lanyard

eliminating the need to over-tighten

Power indicator's secondary function displays battery voltage (accurate to 0

germs or other disease causing organisms

The Brunton Echo is a perfect outdoor accessory

Surefire SF123A CR123 Batteries - 6 pack Tactical it has a quick release6 (123A) Batteries, packaged Optimized for use in SureFire flashlights, SureFire Lithium batteries pack a lot of power into a small package. And unlike alkaline batteries SureFire High Performance Lithium Batteries boast a ten year shelf life, which means they will be ready when you need them, every time. For all SureFire Lithium battery powered lights Features: 10 Year Shelf Life Please Note: We cannot ship Surefire products outside the United States