Universal Qi(R) and USB charger; Grade-A 5,000 mAh Li-Poly battery power bank; When Qi(R)-compatible phone is placed on suction cups, charging starts automatically; Suction cups help keep phone in place while charging; 2-way charging: wirelessly or via USB (micro USB input and USB output); Transmission distance: <=.236 in.; Charging efficiency: >=70%; Input: 5 volts/2 amps; USB output: 5 volts/2 amps; Wireless output: 5 volts/1 amp (5 watts); Enough stored power to fully charge a smart phone 1x or provide up to 9+ hours of playback time; Includes manual;