Name: LED Reading Lamp Series No.: RL007 Size: 194mm x 95mm x 25mm ( folded ) Weight: 350g Number of LED Lights: 1 Color of LED Lights: White Power: Switch power supply and Li-Battery Battery's working duration: 20 hours after each recharge. Feature: It's a new-designed, energy saving lamp for emergent purpose.Can be normally used as a common lamp, supported by alternating current through a switch power supply. The switch power supply is also a recharger. In cases of power cut, the Li-battery can surppot the lamp about 8 hours.