1.Dimensions：2.8*1.4*0.65cm ( USB part ), Diameter 6.9cm, 3.49mm thickness ( Charge Pad ), 100 cm ( wireless charger cable). 2.Working current：≤ 2000mA 3.Stanby current：≤ 50mA 4.Input voltage：DC 4.8~5.5V 5.Output power：≥5W 6.Reaction temperature：0 ～ 50℃ 7.Working heat up range：≤15℃, average 12℃ 8.Working ambient humidity：≤90%; IP67 (wireless charger pad)