4400mAh Mobile Battery, Model number: IMB44H1W Specification ●　Battery: Lithium-ion Battery 4400mAh 3.7V ●　Input Voltage/Current: 5V/1000mA ●　Output Voltage/Current: 5V/1000mA ●　Charging Time: About 7 hours ●　Charging/Discharging life: 500 times ●　Operating temperature range: 0 – 45 degree C ●　compatible device: Smartphones which can be charged by 5V USB ●　Weight: 120g ●　Size: 105mm x 60mm x 15.5mm ●　Accessory: Mico USB - USB cable ●　Manufacture Warranty: 1 year