Bao Xin New Design LED Folding Desk Lamp for Bedroom Work Reading Computer,Build-in Rechargeable Battery for Emergency Use, Bright Candy Color (White) Build-in 800mAh capacity grade A li-ion battery,available for more than 500 times recycle.24 LEDs offer low watt but bright lighting Item size: 13*7.4*5.7 cm;Item weight:285 g. Full charging time:7-8 hrs;charging voltage:90-240 V;charging DC:0.1A 0.8W Working time: level-1: 8hrs;level-2: 4hrs Working condition: -10 to 40 celsius ;humidity: &lt; 90%