1 Li-ion rechargeable Battery: 3.7V/ 1,000mAh

2 Micro USB input: 5V/500mA

3 Micro USB Output: 5V/500mA

4 Self-charging time: 3 hrs (by laptop)

                                       2.5hrs (by 5V/500mA travel charger)

5 Power display: 3 LED indicators shows power level, each represents 33% of battery usage

6 Protection: reverse current protection circuit integrated to prevent batteries from being discharged.

all kindks of cellphones, smartphones portable mobile power bank