Well, by coincidence I have just been wearing mine for the last two days on a "LunaTik" band... I thought that I had left my Nano on a bus almost two years ago and had torn my apartment apart several times looking for it and had given up hope.... Then on Sunday I found it hiding at the back of a bedside drawer! The battery is surprisingly strong considering that it has been out of action for so long.
Somebody at work asked me yesterday if it was the Apple Watch...
o_o