Huawei's new TalkBand B2 transforms into an earpiece

I'm at the HUAWEI mega-booth right now and the videos shown are really well made. 

The product that caught my attention is the HUAWEI TalkBand B2 which is an activity tracker that transforms into a Bluetooth earpiece. 

Not that I ever used an earpiece more than a few days, but still, it's a nice attempt to shake up the standard wearables format. I vote for it. 

Here are the two videos that captured my attention. Worth watchng:

His side: 

Her side: