
Polar Loop
Screenless band that, according to the manufacturer, records heart rate around the clock, nightly HRV, sleep and activity; up to 8 days of battery life and no subscription required.
Fitness tracker with a display that, according to the manufacturer, tracks heart rate, sleep (sleep score), SpO2, skin temperature and activity; up to 7 days of battery life.

Fitness tracker with a display that, according to the manufacturer, tracks heart rate, sleep (sleep score), SpO2, skin temperature and activity; up to 7 days of battery life. Product information is taken from the official manufacturer page; configuration and availability can change.

Screenless band that, according to the manufacturer, records heart rate around the clock, nightly HRV, sleep and activity; up to 8 days of battery life and no subscription required.

Slim fitness tracker with a display that, according to the manufacturer, records heart rate, Body Battery energy levels, sleep and Pulse Ox; up to 7 days of battery life.

Smartwatch with an AMOLED touchscreen that, according to the manufacturer, tracks wrist heart rate, HRV status, Body Battery, sleep and Pulse Ox; up to 11 days of battery life.

Screenless fitness band that, according to the manufacturer, tracks heart rate, Body Battery, HRV status and sleep around the clock; up to 10 days of battery life, usable without a subscription.