Sell power-Pack for all mobile devices -john
All mobile devices, but only one Power-Pack, no more power-shortage! Enjoy Power-Pack!
Power-Pack, a strong portable and rechargeable energy-storage system, can supply power and charge battery for most of the mobile devices.
When people is outside for business or travel, no need take so many chargers, it's very easy for him to solve power-shortage problems of all mobile devices only with one a Power-Pack.
Now please enjoy your mobile and digital life without being interrupted by battery power-shortage.