Garmin Vivoactive 5 vs Amazfit T-Rex 3

Garmin Vivoactive 5

Garmin Vivoactive 5

vsAmazfit T-Rex 3

Amazfit T-Rex 3

Garmin Vivoactive 5Amazfit T-Rex 3
Display1.2-inch (30.4 mm) AMOLED touchscreen, 390x390 pixels, optional always-on mode1.5-inch AMOLED, 480x480, 322 ppi, up to 2,000 nits peak brightness, Gorilla Glass
Case42.2 x 42.2 x 11.1 mm, 23 g without band; lightweight aluminum bezel with silicone band—
BatteryUp to 11 days in smartwatch modeUp to 27 days typical use, up to 13 days heavy use, up to 40 days battery saver, up to 180 hours in GNSS max battery life mode (700 mAh, magnetic charging, about 3 hours for a full charge)
HealthHeart rate, respiration, Pulse Ox, stress, Body Battery, sleep score with sleep coach and nap detection, HRV status, morning report, women's health tracking—
FeaturesGarmin Pay, music storage with Spotify, Amazon Music and Deezer, 30+ preloaded GPS and indoor sports apps, Garmin Coach plans, wheelchair mode, guided meditation, Connect IQ, safety and tracking features—
ConnectivityWorks with iPhone and Android; text replies on compatible Android phonesBluetooth 5.2 and BLE, Wi-Fi 2.4 GHz, NFC (Zepp Pay), microphone
Durability5 ATM water rating (swim)10 ATM; freediving certified to 45 m (EN13319, ISO 6425, GB/T 18828); operates down to -30 C
ColorsBlack/Slate, Ivory/Cream Gold, Navy/Metallic Navy, Orchid/Metallic OrchidOnyx, Lava, Haze Gray
Body—316L stainless steel bezel, polymer middle frame, liquid silicone strap (22 mm); 48.5 x 48.5 x 13.75 mm, 68.3 g without strap; 4 buttons
Positioning—Dual-band GNSS with six satellite systems; free offline maps, contour maps, ski maps, turn-by-turn navigation
Sensors—BioTracker 6.0 PPG (heart rate, blood oxygen), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient light, temperature
OS—Zepp OS 4 at launch, with Zepp Coach and an AI assistant based on OpenAI GPT-4o
Sports—170+ sports modes at launch including HYROX race, freediving, ultramarathon and strength training templates
Compatibility—Zepp App on Android 7.0+ and iOS 14.0+