It's known as ATGNI in the golf world. Bloke rocks up with a £5,000 set of clubs and looking like he covered himself in glue before running through the Titleist section of the pro shop. Shoots 105. "All the gear, no idea."
https://www.kickstarter.com/projects/1977846026/meater-the-first-truly-wireless-smart-meat-thermom
Allegedly shipping next month, but ... you know ... Kickstarter.
I've tried it on a few times. The dial is great but the lugs are really quite long, which made it wear a little uncomfortably for me. I think that on a larger wrist it would be fine.