1. Capacity: 4200mAh
2. Battery: High Quality Lithium Polymer
3. 1 USB Output
4. Input: DC 5V/2.0A Output: DC 5V/2.1A
5. Perfectly compatible with smart mobiles and all 5V digital devices
6. Over charge / discharge protection, Overcurrent protection, Short-circuit protection, Overvoltage protection.

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