External battery cover for iPhone 4/4s (1500mAh)
Model:NP-IP4B
Real capacity: 1500MAH
Output voltage: 5V
Output current: 500mA
Input voltage: 5V
Input current: 500mA
Charging time: 3～4H
Standby time: ≥210H
Holding time for calling: 3G>5H/2G>10H
Time for net play: 3G>4.5H/Wi-Fi >7H
Time for music play: >28H
Time for video play: >7H

Input charging: connect the mini USB port with a USB cable connect on to the computer

or USB AC adapter for charging this external battery case

Standard accessory: 1pc screen protector, 1 standard 2.0 USB cable

Optional color: red, blue,black, white.

Optional color: (Black, red,blue), also pink and white can do with bulk order