... : The high strength case, optimized structure design and MCU control make the product more reliable;· Portability: Just a head lamp ... usage lifetime about 1000 cycles;· Display cap lamp number, time, battery capacity by 4 LED digital device (four squares is full ... , CE/ATEX, DME· Protection category: IP67Features KL4.5LM( With display)Rated Capability 4.2AH Rates Voltage 3.7v Continuous Discharging ...