| Display | 1.32-inch AMOLED, 466x466, 353 ppi, up to 3,000 nits, sapphire glass | 1.3-inch AMOLED touchscreen (416x416) with optional always-on mode, plus five physical buttons (Forerunner 265, 46 mm) |
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| Body | Grade 5 titanium frame and case, aluminum alloy buttons, plastic bezel; 48 x 48 mm case, 15.6 mm thick including sensor (13.2 mm excluding), 45.6 g without strap; 20 mm silicone strap | — |
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| Battery | Up to 20 days (typical use; the launch press release cites 17 days), up to 10 days (heavy use), up to 8 days with always-on display; up to 31 hours in accurate dual-band GPS mode, 69 hours in power-saving GPS; 540 mAh | Up to 13 days in smartwatch mode (up to 15 days for the 265S); up to 20 hours in GPS mode (24 hours for the 265S) (Garmin claims) |
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| Positioning | Dual-band GPS with six satellite systems, circularly polarized antenna and point dead reckoning; downloadable offline maps with turn-by-turn navigation, automatic rerouting, POI search and round-trip route planning | — |
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| Sensors | BioTracker 6.0 PPG sensor (5PD + 2LED), accelerometer, gyroscope, ambient light, geomagnetic, temperature, barometric altimeter | — |
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| Connectivity | Bluetooth LE 5.3, Wi-Fi 2.4GHz, Bluetooth calls, microphone and speaker | — |
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| Durability | 5 ATM water resistance | 5 ATM water rating |
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| Storage | 32GB onboard | Up to 8GB for music and data; Spotify, Deezer and Amazon Music downloads (subscription required) |
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| Extras | Built-in white and red LED flashlight, linear motor, four buttons | — |
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| Sports | 170+ sports modes, 25 auto-recognized strength exercises, HYROX modes, Zepp Coach running plans, HybridCharge energy intelligence | — |
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| OS | Zepp App for Android 7.0+ and iOS 14.0+, no subscription required for workout and recovery data | Garmin firmware; pairs with Android and iOS through the Garmin Connect app |
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| Sizes | — | 46 mm Forerunner 265 and 42 mm Forerunner 265S |
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| Case | — | 46.1 x 46.1 x 12.9 mm (Forerunner 265) |
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| Navigation | — | Multi-band GPS with SatIQ technology; PacePro pacing guidance |
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| Training | — | Training readiness, morning report, daily suggested workouts, Garmin Coach, VO2 max, running power and running dynamics |
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| Health | — | Wrist-based Pulse Ox, Body Battery, sleep score, HRV status, stress tracking, menstrual cycle tracking |
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| Features | — | Garmin Pay, smart notifications, incident detection and LiveTrack |
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