What kinda wearable tech would track my sleep well bit I don't really need anything else.

although it finding my phone might be useful.

a fitbit?

get a fitbit

Fitbit probably

Fitbit would be your best option and connects to your phone. Probably most cost effective too

looking at the fitbits.

looks like they would work.

I think I'll save up for a luxe. that looks like it would get tangled in my hair the least.

if you pay for the monthly premium you get more sleep data, but mine tells me how long I slept for and how much was deep sleep and how much REM, etc.

I have the versa 2. Very tempted to upgrade to the 3.