DigiYes&reg; 7000mAh Polymer Li-ion Wireless Charging Power Bank advanced power management chipset, efficient charging and high power conversion rate. (black) Advanced power management chipset, efficient charging and high power conversion rate. Charge your phone wirelessly or via USB cable. Touch Switch, easy and sensitive.With silicone anti-slip mat, never worry your phone slipping away from the charging position. The wireless charging will shut down automatically if mobile phone leave mobile power bank for 30 seconds. This kind of wireless charging power bank is a portable backup power bank, total capacity is 7000mAh. You can charge your phone wirelessly or via micro USB cable.