The Powerbanks S4000 and S6000 are true performance packages in an attractive, ultra-slim design. With a capacity of 4000 mAh and 6000, they are perfectly suitable for mobile devices such as smartphones, tablets, GPS devices, MP3 players and digital cameras. These devices are charged with an output current of 2.1A in the twinkling of an eye. Thanks to the integrated microUSB cable smartphones and tablets with a microUSB port can be connected directly to the powebanks. Other charging cables can be connected to the USB port recharging all kinds of mobile devices. Therefore, it is even possible that two devices are charged in parallel. Four blue LED lights indicate the battery status of the Powerbanks. At full charge level, the battery life of mobile devices can be extended by several hours.