Universal Qi(R) and USB charger; Grade-A 12,000 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; Charging diameter is 2 in.; 2-way charging: wirelessly or via USB (micro USB input and USB output); Type C input/output port with Quick Charge(TM) 3.0 output; Transmission distance: 6 cm. (.236 in.); Charging efficiency: >=65%; Power: 10 watts + 7.5 watts + 5 watts; Micro USB input: 5 volts/2 amps, 9 volts/2 amps; Type C input: 5 volts/2.5 amps, 9 volts/2 amps; Enough stored power to fully charge a smart phone 4x or provide up to 18+ hours of playback time; Includes manual;