Pace Hare

Polar Vantage V3

43 h of GPS and 10 days as a smartwatch, 13 h more GPS than the Vantage M3. It's bigger too, at 47.3 mm and 57 g.

Sleep and recoveryGym and cyclingFirst marathonTriathlon

What the maker states

GPS battery43 h, Performance training mode
Smartwatch battery10 days, Smartwatch mode
Weight57 g, With wristband
Case47.3 mm
Water ratingWR50
Display1.39 in AMOLED, 454 x 454
Satellite systemsGPS, GLONASS, Galileo, BeiDou, QZSS; dual-frequency
Heart rate sensorOptical, Elixir, OHR Gen 4
External sensorsBluetooth
Training metricsTraining Load Pro, Energy Sources, wrist-based running power, swimming metrics
AppPolar Flow

Against other sports watches

GPS battery, in hours

Where this came from