Garmin Forerunner 45 vs Garmin Venu

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

Forerunner 45 compared with Venu
GarminForerunner 45GarminVenu
Overview
ReleasedMay 2019September 2019
Display
Case sizes42 mm43.2 mm
PanelMemory-in-pixelOLED
Always-on displayYesYes
Display detail1.04-inch (26.3 mm) sunlight-readable colour MIP display, 208 x 208 pixels, with button controls.1.2-inch (30.4 mm) AMOLED touchscreen, 390 x 390 pixels, with optional always-on mode.
Screen protectionChemically strengthened glass.Corning Gorilla Glass 3.
Health and fitness
ECGNoNo
Blood oxygenNoYes
Skin temperatureNoNo
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSSingle-bandSingle-band
Water resistance50 m50 m
SensorsGPS, GLONASS, Galileo, Garmin Elevate wrist heart rate and accelerometer.GPS, GLONASS, Galileo, Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope and accelerometer.
Health featuresAll-day heart rate, stress and sleep tracking, plus Body Battery energy monitoring.Wrist heart rate, Pulse Ox blood oxygen, sleep stages, respiration, stress, Body Battery, hydration and menstrual cycle tracking; Pulse Ox availability varies by country.
Fitness featuresGarmin Coach, VO2 max estimate, running and cycling profiles, indoor track, treadmill, elliptical, cardio and yoga activities.More than 20 sports apps, including running, cycling, pool swimming and golf; animated cardio, strength, yoga and Pilates workouts and Garmin Coach plans.
Safety featuresIncident detection, assistance and LiveTrack require a paired phone.Incident detection, assistance and LiveTrack require a paired phone.
Battery and connections
Battery life (maker's claim)Up to 7 daysUp to 5 days
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Battery life detailUp to seven days in smartwatch mode or 13 hours in GPS mode.Up to five days in smartwatch mode, 20 hours with GPS, six hours with GPS and music, or two days with always-on display.
ChargingRechargeable battery with Garmin charging cable.Rechargeable battery with Garmin charging cable.
ConnectivityBluetooth and ANT+; smart notifications, phone music controls and Connect IQ watch faces. No on-watch music storage.Bluetooth, ANT+ and Wi-Fi; smart notifications, Garmin Pay, Connect IQ and phone-free playback of up to 500 stored songs.
Storage–Stores up to 200 hours of activity data and up to 500 songs.
Design
Weight (lightest version)36 g (better)46.3 g
SoftwareGarminGarmin
Case materialsSilicone band and 5 ATM water rating.Stainless-steel bezel, fibre-reinforced polymer case and silicone band; 5 ATM water rating.
Size42 x 42 x 11.4 mm; 36 g.43.2 x 43.2 x 12.4 mm; 46.3 g.
BandsFits wrists 129–197 mm.Quick-release 20 mm band; fits wrists 125–190 mm.
ColoursLava red band with black case.Light sand case and band with rose-gold bezel.

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