With the high capacity Li-ion battery, Win3 corded cap lamp is free maintenance up to 1000 cycles. More than 7500lux at constant current discharge, brightness not change during operation. It is used in many applications, such as emergency on highway , camping, hiking, coal mining, marine using, exploration working, outdoor adventure, fishing, hunting, and other related industries. The optimized structure, impact resistant housing material make it water proof, flame proof and explosion proof, the Win 3 cap lamps can operate under water for an entire shift.