aluminum led flashlight,solar flashlight,dynamo torch. aluminum led flashlight,solar flashlight,dynamo torch. 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