Available in either black or white, the Mono 4000 Power Bank is designed for easy portability and usage. The slim design makes it ideal to carry around while the handy lights on the side indicate the current power level. 

Holding a 4000mAh power supply, this portable charger is perfect for charging up smartphones and tablets on the go. It can also be printed or engraved onto making it a perfect handout at promotional events and shows.