A Galaxy S5 wireless inductive charging receiver module arrived at my doorstep today and will work perfectly to supply my smart watch with up to 750ma of 5v charging power, for it to use along with USB, to charge the watch's 500mah lithium polymer battery. With its two solderable contacts and small size, this receiver will be perfect to slot in the watch case and provide the charging circuit with wireless power when soldered to the PCB's auxiliary power input pin at the circuit board's bottom right corner in the picture. Instead of fumbling for a micro USB cable, all you have to do now is place the watch on a QI standard compatible charging pad, and the watch will automatically begin receiving 5v with no connections and charging the battery just as fast as plugging in the USB cable. Seamless, high-tech, easy. Fantastic!