High density battery chip, body volume decreased 21.4 percent 9S circuit protection, ensure the safety use 5.1V 2.1A USB output, quick charing2.1A current output, ensuring the emergency charging needs for its fast charging feature. Up to 93 percent conversion rateConsistent the surface technology with MacBook Pro Automatically adjust the output power, meeting the device's charging needs.Capacity (mAh): 10000mAh Special Functions: With battery indicator light, Super Slim, Quick Charge, Long Lasting, Lightweight Connection Type: One USB Output Interface, Micro USB Battery type: Li-ion Battery Color: Silver Material: Metal, Aluminium AlloyInput: DC 5V 2A Output: DC 5.1V 2.1AProduct weight: 0.207 kg Package weight: 0.250 kg Product size (L x W x H) : 9.1 x 6.04 x 2.7 cm / 3.58 x 2.37 x 1.06 inches Package size (L x W x H): 11.0 x 10.0 x 3.5 cm / 4.32 x 3.93 x 1.38 inchesPackage Contents : 1 x Mobile Power Bank 1 x USB Cable