Product Price Heart Rate Monitor GPS Waterproof Rating (IPX) Battery Life (hours) Screen Size (inches) Activity Tracking
Fitbit Fitbit Luxe
US
£74.64 Water resistant to 50 m Up to 5 days 0.76 in Automatic activity and sleep tracking, steps, distance, calories, Active Zone Minutes, SpO2 sleep monitoring

The Fitbit Luxe is a slim, fashion-forward fitness tracker with an AMOLED color display, continuous heart‑rate monitoring, stress and sleep insights, and swimproof design. It suits users who want a stylish, lightweight tracker for everyday health and fitness monitoring rather than a full smartwatch for advanced workout metrics.

Whoop Whoop 4.0 (with small band option)
US
£148.60 IP68 5 days Sleep, strain, recovery, steps, activity/workout tracking (connects to phone GPS for route tracking)

Whoop 4.0 is a small, sensor-focused wearable that continuously measures heart rate, SpO2, skin temperature, sleep, strain, and recovery. It suits users who want continuous biometric monitoring and recovery-focused coaching rather than a display-based smartwatch.

Apple Apple Watch Series 11 41mm
US
£245.68 50 m water resistant (swimproof) Up to 73 hours 41 millimeters Steps, workouts, sleep, sleep apnea detection, cycle tracking, blood oxygen

The Apple Watch Series 11 41mm is a compact smartwatch focused on health and fitness with advanced sensors (ECG, optical heart sensor, body temperature) and built-in GPS. It suits users who want comprehensive activity and health tracking in a lightweight design with multi-day battery life.

Samsung Samsung Galaxy Watch 6 40mm
US
£224.02 5ATM + IP68 300mAh (typical) - up to ~1 day (varies) 1.3 in Tracks 90+ workouts, automatic workout detection, sleep tracking, body composition

The Galaxy Watch 6 40mm has a 1.3 in Super AMOLED sapphire display, integrated GPS, optical heart-rate sensor with ECG support, and a 300mAh battery. It targets users who want a compact smartwatch with strong fitness tracking, sleep monitoring, and Samsung/Wear OS features.

Apple Apple Watch SE 2 40mm
US
£185.94 50 meters Up to 18 hours 40mm Steps, calories, distance, workouts, sleep, automatic workout detection

The Apple Watch SE (2nd generation) 40mm is an affordable smartwatch with the S8 chip, optical heart rate monitoring, built-in GPS, and swim‑proof 50m water resistance. It provides comprehensive activity and sleep tracking and suits users who want core Apple Watch features without ECG or blood oxygen sensors.

Samsung Samsung Galaxy Watch 5 40mm
US
£150.84 5ATM, IP68 284mAh (typical) 1.2 in Super AMOLED Yes (auto workout tracking, 90+ exercises, sleep tracking, body composition)

The Samsung Galaxy Watch 5 40mm is a compact Wear OS smartwatch with built-in GPS, ECG and optical heart-rate monitoring, advanced sleep tracking and body-composition measurements. It suits Android users who want a full-featured fitness-focused smartwatch in a smaller, durable design.

Oura Oura Ring 4 (size options for small fingers)
US
£297.95 100m/328 ft 5-8 days Automatic activity detection for 40+ activities, steps, calories, cardio zones

Oura Ring 4 is a compact, titanium wearable focused on sleep, recovery, and continuous health sensing with 24/7 heart rate, SpO2, temperature trends, and activity detection. It suits people who want a discreet ring form-factor for daily health tracking and multi-day battery life rather than GPS-based route tracking.

Fitbit Fitbit Inspire 3
US
£66.46 5 ATM Up to 10 days 1.55 in Steps, calories, Active Zone Minutes, 40+ workout types, sleep, SpO2, HRV

Slim color AMOLED fitness tracker with 24/7 optical heart-rate, SpO2 and advanced sleep tracking, 5 ATM water resistance and up to 10 days battery life. Suits users who want a simple, long‑lasting tracker for daily activity, sleep insights, and basic workout tracking without built‑in GPS.

Garmin Garmin Lily 2
US
£186.68 Up to 9 days in smartwatch mode 34 mm 24x7 activity tracking for steps distance calories sleep SpO2 HRV and multiple sport profiles

A small, stylish smartwatch with a metal case that offers 24x7 health monitoring and extensive activity tracking. The Lily 2 Active adds built-in GPS and up to 9 days battery life, suiting users who want a fashion-forward watch that still supports serious fitness features.