Emergency Reserve Battery with minmun 20yr shelf life.
USB Connection
Quick Specs: Aluminum housing. Size: L 140 mm x W 49 mm x H 37 mm (L 5.51Ó x W 1.92Ó x H 1.46Ó). Primary Batteries: 2 CR123 batteries. Reserve Battery: 1 mPower On Commandª Reserve Battery. USB connection
