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Garmin Forerunner 610 vs Garmin Forerunner 920XT

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

Better figure, where one is clearly better

GarminForerunner 610GarminForerunner 920XT
Overview
ReleasedApril 2011October 2014
Display
Case sizes45.7 mm48 mm
Panel–Memory-in-pixel
Always-on displayYesYes
Display detailBacklit 25.4 mm touchscreen, 128 × 128 pixels; up to four data fields per training page. Panel technology is unpublished in the maker's specification.1.1 x 0.8-inch (29 x 21 mm) rectangular colour MIP display, 205 x 148 pixels, with button controls.
Health and fitness
ECGNoNo
Blood oxygenNoNo
Skin temperatureNoNo
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSSingle-bandSingle-band
Water resistance–50 m
SensorsHigh-sensitivity GPS receiver and ANT+ support for heart-rate straps, foot pods, GSC 10 cycling sensors, weight scales and compatible fitness equipment. No optical wrist sensor.GPS, GLONASS, barometric altimeter and accelerometer. Heart rate requires an optional ANT+ sensor.
Health features–Steps, distance, calories and sleep tracking; no wrist optical heart-rate sensor.
Fitness featuresTraining Effect, Virtual Partner, Virtual Racer, interval and custom workouts, run/walk alerts, Auto Lap, Auto Pause and Auto Scroll; vibration alerts for pace, heart rate, time and distance.Running, 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 featuresNavigate to a stored location or back to the start; no base maps.–
Battery and connections
Battery life (maker's claim)Up to 8 hoursUp to 24 hours
In low-power modeUp to 28 days–
Mobile data optionNoNo
Works withNo phone pairingiPhone and Android
Battery life detailRechargeable 200 mAh lithium-ion battery; up to eight hours with GPS, four weeks in power-save mode or one week with forty-five minutes of GPS training each day.Up 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.
ChargingMagnetic contact cradle with USB power.Rechargeable lithium-ion battery with charging/data cradle.
ConnectivityANT+ wireless computer uploads through the included USB ANT stick; Garmin Connect and Garmin Training Center. No direct phone pairing.Bluetooth, 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.
StorageUp to 1,000 laps and 100 saved locations.Stores 100 hours of activity history and up to 100 waypoints.
Design
Weight (lightest version)72 g61 g
SoftwareGarminGarmin
Case materialsIPX7 immersion protection, one metre for thirty minutes; the owner's manual says it is not intended for swimming.Hinged band and 5 ATM water rating.
Size45.7 × 63.5 × 14.2 mm without the strap; 72 g. Width is used as the case size.48 x 55 x 12.7 mm; 61 g.
Colours–White case with red band.
BandsReplaceable wrist strap; optional fabric strap.–
In the boxWatch, AC adapter, USB charging cradle, USB ANT stick and documentation; heart-rate strap included in some bundles.–

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