As mobile phone replacements ne really great idea. Calls on the Speaker is himself honored when cycling. also via the cable and via Bluetooth headset is fine. The understanding on both sides is very good. When the clock was ringing in the meeting and I accepted the call through the Speaker, I saw all the mouths are open. that was a big hit :-). Nevertheless, I have sent back the clock. Reason: the cable head is an absolutely inexpensive part. Would not be so tragic, it does not w3enn a Micro USB HS would, thus unfortunately can not be exchanged for a better one. No problem I thought, then you take just a Bluetooth Stereo Headset. Unfortunately that does not work well. You can still make calls over but music is not because the phone does not support A2DP BT stereo.
I was then but decided to spend a few more Euros and brought with the AW 414.go.