Input:AC100-240V 50/60Hz; Output: DC 5V 3.1A; Output voltage adjustable rate: 5%; Output ripple !#!amp!*! noise: 80mVp-p; Working efficiency: 75~80%; Output short circuit protection、 overheating protection; Working temperature: 0~50'C; Storage temperature: -20~85'C; Humidity: 10%~95%RH; Safe and reliable.With corresponding USB connection cables、 charging for IPOD、 IPHONE、 IPAD、 GPS smart phones and tablets etc. Easy to carry. Dimensions: 2.87 in x 2.36 in x 0.91 in (7.3 cm x 6.0 cm x 2.3 cm) Weight: 1.80 oz (51 g)