Garmin Forerunner 70 vs Garmin Forerunner 920XT

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

Better figure, where one is clearly better

Forerunner 70 compared with Forerunner 920XT
GarminForerunner 70GarminForerunner 920XT
Overview
ReleasedMay 2026October 2014
Display
Case sizes42.6 mm48 mm
PanelOLEDMemory-in-pixel
Always-on displayYesYes
Display detail1.2-inch (30.4 mm diameter) colour AMOLED touchscreen, 390 x 390 pixels; optional always-on display and large-font setting; five physical buttons1.1 x 0.8-inch (29 x 21 mm) rectangular colour MIP display, 205 x 148 pixels, with button controls.
Screen protectionChemically strengthened glass–
Health and fitness
ECGNoNo
Blood oxygenYesNo
Skin temperatureNoNo
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSSingle-bandSingle-band
Water resistance50 m50 m
SensorsGarmin Elevate wrist heart rate; Pulse Ox; accelerometer; ambient light sensor; no built-in barometric altimeter or body-temperature sensorGPS, GLONASS, barometric altimeter and accelerometer. Heart rate requires an optional ANT+ sensor.
Health featuresContinuous heart rate with high/low alerts; HRV status; Body Battery; stress and respiration; advanced sleep, sleep coach, breathing variations and nap detection; smart wake alarm; Health Snapshot; lifestyle logging; Health Status; women's health tracking via Garmin Connect; no ECG appSteps, distance, calories and sleep tracking; no wrist optical heart-rate sensor.
Fitness featuresMore than 80 sports apps; training readiness, status, load, load focus and recovery time; Garmin running, cycling and strength coaching; daily suggested running workouts including run/walk; quick workouts; wrist-based running dynamics and running power; PacePro; VO2 max and race predictions; breadcrumb course navigation, back-to-start and TracBack; pool swimming; no open-water swim or triathlon mode; no full offline mapsRunning, cycling, pool and open-water swimming, and multisport activities; swim stroke and SWOLF metrics, race predictor and VO2 max with an external heart-rate sensor. Running dynamics require an HRM-Run strap.
Safety featuresIncident detection during selected activities, assistance and LiveTrack require a paired compatible smartphone; live event sharing is Android-only; screen flashlight, not a separate LED torch–
Battery and connections
Battery life (maker's claim)Up to 13 daysUp to 24 hours
In low-power modeUp to 28 days–
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Battery life detailSmartwatch up to 13 days, or 5 days with display always on; battery saver smartwatch up to 28 days; GPS-only GNSS up to 23 hours; all-systems GNSS up to 16 hours; actual life depends on enabled features and usageUp to 24 hours using GPS alone, 20 hours with GPS and GLONASS or 40 hours in UltraTrac. Garmin's manual also says up to one month in watch mode with activity tracking and over four months in watch-only mode; the main battery figure uses the exact 24-hour GPS claim because a month has no fixed hour count.
ChargingGarmin proprietary plug charging/data cable; rechargeable built-in lithium-ion battery; USB charging temperature 0–45 °CRechargeable lithium-ion battery with charging/data cradle.
ConnectivityBluetooth and ANT+; GPS, GLONASS and Galileo; no multi-band GNSS; Android-only text responses and notification images; Connect IQ apps/watch faces/data fields; Garmin Share; controls smartphone music without offline playback; no Garmin Pay, speaker/microphone calls or cellular connectionBluetooth, ANT+ and Wi-Fi; smart notifications, Garmin Connect automatic uploads, LiveTrack through a paired phone and VIRB camera control. Connect IQ support arrived in a later software update.
Storage512 MB memory/history; not storage for offline music playbackStores 100 hours of activity history and up to 100 waypoints.
Design
Weight (lightest version)40 g (better)61 g
SoftwareGarminGarmin
Case materialsFibre-reinforced polymer bezel; silicone band; chemically strengthened glass; 5 ATM water rating; operating/storage temperature –20–60 °CHinged band and 5 ATM water rating.
Size42.6 x 42.6 x 11.9 mm; Garmin lists 40 g without a separate body-only weight48 x 55 x 12.7 mm; 61 g.
BandsStandard 20 mm quick-release silicone band; fits 126–203 mm wrists–
ColoursUK Black, Whitestone, Citron and Cool Lavender; global range additionally offers Tidal Blue and Soft PinkWhite case with red band.
In the boxForerunner 70; charging cable; documentation–

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