3507 Emergency Mobile Phone Battery Charger (3507)

Feature:
Shelf life: within 5 years
Standby time: 2 days
Talk time: 1-2 hour
Type of Battery: 4pcs CR2450(included) Card Style, easy to carry This is a pre-charged self contained battery and not a recharger.
Simply plugs straight into the bottom of your mobile phone. use only when your mobile battery is signalling low battery alert to extend your mobile standby time.It can be re-used several times until battery is drained completely.