[theli0nheart]

The pricing of $49 is the kicker. No one can make the device you're describing for that. Garmin devices (like the Forerunner 935) tick off your feature requirements but are relatively expensive.

[tokyoSurfer]

The Mi Band is close to what I listed for $19. The money should be made on add-ons and upgrades, not the product itself.

[swiley]

I'd be willing to bet that I could.

[maneesh]

Do it. I'd wager on this.