The next generation of wearable. 

1) It's waterproof. So you can use it while showering. 

2) It's a watch. So you can tell the time. Able to be used at work.  Stand-alone.

3) It has a speaker and plays music from an internal SD card.

4) Optional: Bluetooth, so it can connect to your phone and play Spotify or music saved on your phone.

5) No GPS. I want to be "off the grid". 

6) Charging slot is also how to access the SD card?

If this exists, I'll buy it, but I can't find it anywhere. 

I could just "staple" 6 systems together.