Product Price Heart Rate Monitor GPS Waterproof Rating (IPX) Battery Life (hours) Screen Size (inches) Activity Tracking
WHOOP WHOOP 5.0 (band)
US
£148.69 32.8 feet 14+ days 24/7 activity and sleep tracking, strain and recovery metrics

WHOOP 5.0 is a screen-free wearable focused on continuous heart-rate, sleep, strain, and recovery monitoring with 14+ day battery life and wearable versatility. It suits athletes and users who want detailed, continuous biometric insights rather than a smartwatch interface.

Amazfit Amazfit Bip 6
US
£59.77 5 ATM Up to 14 days (typical use) 1.97 in 140+ workout modes including running, cycling, swimming, smart strength training

The Amazfit Bip 6 is an affordable everyday smartwatch with a 1.97 in AMOLED display, built-in GPS, 24/7 BioTracker heart rate monitoring, and 5 ATM water resistance. It offers long battery life and 140+ activity modes with AI coaching, suited for fitness users wanting strong tracking features at a low price.

Ultrahuman Ultrahuman Ring Air
US
£260.77 up to 100 meters 4 to 6 days steps distance calories VO2 Max sleep temperature HRV workouts

A lightweight titanium smart ring that tracks heart rate, HRV, sleep, skin temperature and activity with multi-day battery life and no on-ring display. Suited for users who want continuous biometrics in a discreet form factor and deep app-based insights.

Xiaomi Xiaomi Mi Smart Band 8
US
£29.88 5ATM Up to 16 days (typical) 1.62 in Over 150 sports modes, sleep, SpO2, stress, steps, running pebble mode

The Xiaomi Mi Smart Band 8 is a slim AMOLED fitness band with 24/7 heart rate and SpO2 monitoring, a 1.62 in AMOLED screen, 5ATM water resistance and up to 16 days typical battery life. It suits users who want an affordable, long‑battery fitness tracker with extensive activity modes and swim-safe water resistance.

RingConn RingConn Smart Ring
US
£223.41 IP68 10-12 days Steps, Workouts, Calories, Sleep stages, Stress metrics

A slim titanium smart ring focused on sleep, vitals, and continuous health monitoring with sleep apnea detection and long battery life; suits users who want detailed sleep and recovery insights without a bulky wrist device.

Fitbit Fitbit Air
US
£63.50 Water resistant up to 50 metres Up to 7 days Steps, distance, calories burned, sleep stages, automatic workout detection

The Fitbit Air is a small, screenless tracker that provides 24/7 heart rate monitoring, sleep-stage tracking, SpO2 sensing, and automatic activity detection while syncing data to the Google Health app. It's lightweight and designed for users who want continuous health tracking without a display and with multi-day battery life.

Samsung Samsung Galaxy Fit3
US
£44.08 5ATM/IP68 Up to 13 days 1.6 in Tracks over 100 workouts including steps, sleep, swim, stress, blood oxygen

The Samsung Galaxy Fit3 is a slim, budget-friendly fitness band with a 1.6 in AMOLED display, optical heart rate sensor, blood oxygen monitoring, and up to 13 days battery life. It suits Android users who want reliable daily activity and sleep tracking without built-in GPS and prefer long battery life and swim resistance.

Whoop Whoop 5.0
US
£148.69 Water resistant to 32.8 feet 14+ days Sleep, Strain, Recovery, VO2 Max, step counting, heart rate zones

Whoop 5.0 is a band-style health and fitness tracker focused on continuous heart-rate sensing, long battery life, and advanced recovery and sleep coaching; it suits athletes and users who want 24/7 biometric insights without a display. It emphasizes sensor accuracy, multi-day battery life, and membership-based analytics.

Fitbit Fitbit Charge 6
US
£100.13 Water resistant to 50m Up to 7 days 1.52 in AMOLED Steps, distance, calories, Active Zone Minutes, 40+ exercise modes, sleep stages, SpO2, stress and Daily Readiness Score

The Charge 6 is a slim advanced fitness tracker with built-in GPS, an improved optical heart-rate sensor, ECG support, and a vibrant 1.52 in AMOLED display. It suits runners and active users who want detailed workout, sleep, and health insights with week-long battery life.

Oura Oura Ring 5
US
£298.13 Waterproof up to 100m (IP68) 6-9 days Automatic detection of 40+ activities with live activity tracking

Oura Ring 5 is a smaller, titanium smart ring focused on sleep, recovery, and continuous health sensing with upgraded sensors for improved heart rate and sleep accuracy. It suits users who want discreet, 24/7 biometric tracking and long battery life rather than a display or built-in GPS.

Oura Oura Ring 4
US
£223.41 100m/328ft 5-8 days Automatic activity detection and tracking (40+ activities), steps, calories, cardio zones

Oura Ring 4 is a titanium smart ring focused on continuous sleep, heart rate, temperature, SpO2 and activity tracking with recessed sensors and 5-8 day battery life. It suits users who want detailed health and sleep insights in a small form factor rather than a full-featured sports watch.

Garmin Garmin vívosmart 5
US
£112.07 5 ATM Up to 7 days 21.3 millimeters Steps, distance, calories, sleep, stress, VO2 max, activity profiles

Small fitness tracker with an optical heart-rate sensor, phone-connected GPS, and a 21.3 mm monochrome display. Suited for users wanting accurate wrist heart-rate and daily health/activity tracking without built-in GPS or a large smartwatch display.

Garmin Garmin Venu 3
US
£336.23 5 ATM Up to 14 days in smartwatch mode 35.5 millimeters Yes, multiple sports modes and activity tracking (steps, sleep, VO2 max, Body Battery)

The Garmin Venu 3 is an AMOLED GPS smartwatch with wrist-based heart rate, Pulse Ox and extensive activity and sleep tracking, suited for users who want detailed health metrics and long battery life. It supports built-in GPS, multiple sports modes and up to 14 days battery in smartwatch mode, making it good for fitness-focused users who prefer less frequent charging.