... Li-ion battery, ergonomic design, extremely long service life, compact size and light weight, stainless aluminum alloy ... carrying strap.* Decent design.* Designed for everyone including:Maritime, coast guard, military units, police, law enforcement, border patrol, searching, ... lifespan (charging and discharging times): ≥500 times* Bulb life-span: 3000 hours* Continual illuminating time: 70 mins/35W ...