Fitness trackers by battery life

XIAOMI

Smart Band 10 Fitness Tracker, 1.72" AMOLED Display, 21Day B...

A cheap fitness tracker that nails the basics

Polar

Grit X2 Pro Premium GPS Smart Sports Watch – Ultimate Outdoo...

A serious training tool disguised as a rugged smartwatch

COROS

VERTIX 2S Adventure GPS Watch, 40 Days Battery Life, GPS Nav...

The ultra-endurance watch that finally lets you forget the charger

COROS

PACE Pro GPS Sport Watch, 1.3-inch AMOLED Touchscreen, Faste...

A no-nonsense GPS watch with serious battery and training tools

Suunto 9 Baro GPS Sports Watch with Long Battery Life and Wr...

A serious training watch with a few rough edges

Garmin fēnix 7 PRO SOLAR, 47mm GPS smartwatch, multisport, S...

The serious training watch that mostly just gets out of your way

Fitbit

Google Fitbit Charge 6 Activity Tracker with 6-months Premiu...

A no-nonsense fitness band with a few Google headaches

Garmin

Lily 2 Active GPS 38mm Smartwatch, Stylish Smaller watch, Fi...

A small women’s smartwatch that actually fits tiny wrists

WHOOP

5.0/MG Activity Tracker - 12 Month Membership - Health and F...

Solid Performance with Room for Improvement

WHOOP

5.0/MG Activity Tracker - 12 Month Membership - Health and F...

Data-heavy strap for people who actually want to train smarter