The A170 and M165 headsets are completely identical inside and out. Same features, same performance, same warranty. The differences are in what comes with the headset:
- The A170 includes the "exclusive Apple charging kit": a 2-in-1 charging cable, enabling simultaneous headset/iPhone charging via a single USB connection, plus a USB car charger. Whereas the M165 includes a standard micro USB AC adapter for connection to a wall outlet.