For Iphone4 input voltage/current:5-5.5v/500-1000mA output voltage/current:5v/500mA capacity:polymer Li-ion battery 2000mAh

For Iphone4input voltage/current:5-5.5v/500-1000mAoutput voltage/current:5v/500mAcapacity:polymer Li-ion battery 2000mAh

standby time:up to 400 hours

Talk time:up to 7 hours on 3G

                  up to 16 hours on 2G

internet use:up to 7 hours on 3G

                       up to 12 hours on WI-FI

audio play: up to 40 hours

vidio play:up to 12 hours

Features:

1.Super-slim,only 16.9mm thickness added Iphone 4.

2.Setted 2000mAh polymer Lithium-ion battery,more powerful,safe and durable.

3.Craftsmanship,protective essence to aviod scratching or damaging.

4.Advanced technology,"Made for Iphone"official approval.

5.Innovative design,cool appearance and distinctive.

External solar charger for Iphone (5v1700mAh)