1.Inside there is a high capacity rechargeable lead-acid (1000mAH) free maintain. 2.Alternating Current: 220V/HZ, keep the charging 12 hours. And most charge time should be less than 15 hours. 3.Output voltage: DC4V. 4.Durable recharge period more than 500 times. 5.Use 16 long life and high brightness LED bulb. 6.LED bulb is low power consumption and long light time. 7.When the battery is fully charged, the lamp can be lighted continuously about 15 hours. 8.Low price,very suitable for the developing country Price USD 1.51 / Pcs Price Condition FOB Ningbo Origin China Material ABS Packaging color gift box Package Size 22.5 x 6.3 x 6.3 Centimeters Package Weight 250 null Delivery lead time 30days Minimum order 2000 Supply ability 50000pcs/day