aluminum flashlight,led aluminum flashlight,rechargeable flashlight. aluminum flashlight,led aluminum flashlight,rechargeable flashlight. Rated voltageDC3.7VRated capacity2Ahworking voltage3.1-3.3Vaverage service life>100000hcontinuous working time>=10hcharging time4.5hthe service life of batteryabout 10000 cyclesout side diameter25mmlength1200mmWeight0.128kg