Included in Package Protective cover Features Rechargeable lithium-ion battery Designed to power Digisight Ultra / Forward / Helion / Trail product lines Extended operating time Battery Type Li-Ion Full Battery Charge Time 10 Hours Current 1.3 rated charge A Full discharge time 21 -26 (with Helion) Charge voltage 5 V Operating charge current, A < 2 A Rated voltage 1.3 rated charge A Body Material Glass-nylon composite Weight, oz 8.5 Operating temperature, F/C -4 to 140 / -20 to 60 Length (in/mm) 2.9 / 73 Width (in/mm) 1.7 / 47 Height (in/mm) 2 / 50