Item No.: SL-W6790 Bulb: 0.5 watt LED + 2 watt COB Battery: 3.7V 750 mAh Max output: 150 Lumens Function: Low (COB) – High (COB) –ON(0.5 Watt) – OFF Run time: 2 hrs (COB) ; 4 hrs (0.5 watt) Recharging time: 2 hrs (USB charging port) Adaptor : 5V 1A Beam Distance: 43 meters Size: 156 x 30 x 23 MM N.W.:84 g Magnet on bottom Hook and Clip on back Power indicator TPR rubber cover the housing Using it as flashlight USB rechargeable port,so you can charge it by USB line.