For Iphone4 input voltage/current:5-5.5v/500-1000mA output voltage/current:5v/500mA capacity:polymer Li-ion battery 750mAh

For Iphone4input voltage/current:5-5.5v/500-1000mAoutput voltage/current:5v/500mAcapacity:polymer Li-ion battery 750mAh

standby time:up to 120 hours

Talk time:up to 2.5 hours on 3G

                  up to 4 hours on 2G

internet use:up to 2.5 hours on 3G

                       up to 3.5 hours on WI-FI

audio play: up to 15 hours

vidio play:up to 4 hours

Features:

1.Small size,super-slim,only 9.3mm.

2.Setted 750mAh polymer Lithium-ion battery,safe and durable,good solution for contingency time.

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 charger for Iphone (5v2000mAh)