Display type

Any display AMOLED / OLED Transflective MIP LCD / IPS

Screen size

Any size Up to 1.2" 1.3" – 1.4" 1.45" – 1.55" Above 1.55"

Water resistance (ATM)

Any rating Up to 5 ATM 10 ATM class 15 ATM and above

Weight

Any weight Under 45 g 45 – 54 g 55 – 64 g 65 g and above

Built-in GPS

Any GPS support Has built-in GPS No built-in GPS

Heart rate monitor

Any heart rate support Includes heart rate monitoring No heart rate monitoring

Blood oxygen (SpO₂)

Any SpO₂ support Measures blood oxygen No blood oxygen sensor

Barometer / altimeter

Any barometer support Includes barometer No barometer

Temperature sensor

Any temperature sensor Has temperature sensor No temperature sensor

Battery life (smartwatch mode)

Any battery life Under 7 days 7 – 14 days 15 – 24 days 25 days and above

Battery life (GPS mode)

Any GPS battery life Under 25 hours 25 – 49 hours 50 – 79 hours 80 hours and above

Solar charging

Any solar option Supports solar charging No solar charging

Multi-sport profiles

Any multi-sport support Tracks multiple sports Single-sport only

VO₂ Max estimation

Any VO₂ Max support Estimates VO₂ Max No VO₂ Max estimation

Sleep tracking

Any sleep tracking Tracks sleep No sleep tracking

NFC payments

Any NFC capability Supports contactless payments No NFC payments

ANT+ support

Any ANT+ support Supports ANT+ No ANT+ support