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Forerunner® 620
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Forerunner® 910XT
from £289.99
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Forerunner® 310XT
from £209.99
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Forerunner® 620
from £269.99
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Forerunner® 910XT
from £289.99
Remove this device from comparison.
Forerunner® 310XT
from £209.99

General

Physical dimensions 1.8" x 1.8" x 0.5" (45 x 45 x 12.5 mm) 2.1" x 2.4" x 0.6" (54 x 61 x 15 mm) 2.1" x 2.2" x 0.8" (54 x 56 x 19 mm)
Weight 1.5 oz (43.6 g) 2.5 oz (72 g) 2.5 oz (72 g)
Water rating 5 ATM 5 ATM 5 ATM
Battery type Rechargeable lithium-ion Rechargeable lithium-ion Rechargeable lithium-ion
Touchscreen
Display size 1.0" (25.4 mm) diameter 1.3" x 0.8" (33 x 20 mm) 1.3" x 0.8" (33 x 20 mm)
Display resolution 180 x 180 pixels 160 x 100 pixels
Color display
Battery life Up to 6 weeks in watch mode; up to 10 hours in training mode Up to 20 hours Up to 20 hours
High-sensitivity receiver

Maps & Memory

Waypoints/favorites/locations 0 100 100
Routes 0
History 1000 laps 1000 laps 1000 laps

Clock Features

Time/date Includes date and alarm.

Sensors

GPS
Barometric altimeter
Accelerometer

Activity Tracking Features

Calories burned

Training, Planning and Analysis Features

Customizable data pages
Advanced workouts
Auto Pause®
Auto scroll
Auto Lap®
Vibration alerts
Virtual Partner
Virtual Racer™
Virtual Pacer™ (compares current pace to target)
V02 max
Training Effect (aerobic)
Personal records (running, cycling, swimming)
Auto multisport activities
Manual multisport activities

Running Features

Running dynamics
Race predictor
Foot pod capable Yes (optional) Yes (optional) Yes (optional)
Recovery advisor

Cycling Features

Courses (compete against previous activities)
Time/distance alerts (triggers alarm when you reach goal)
Interval training
Multiple bike profiles
Compatible with Vector™ (power meter)
Power meter compatible (displays power data from compatible third-party ANT+™-enabled power meters) Yes (records data approx. 1 per second) Yes (records data approx. 1 per second)

Swimming Features

Pool swim metrics (lengths, distance, pace, stroke count/rate, calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly)
Open-water swim metrics (distance, pace, stroke count/rate, calories)

Garmin Connect™

Garmin Connect™ compatible (online community where you analyze, categorize and share data)
Automatic sync (automatically transfers data to Garmin Connect)

Additional

Additional

V0₂ max estimate: Yes

Recovery advisor: Yes

Race predictor: Yes

Running dynamics: Yes

Watch functions include date and alarm.

Run/walk feature: Yes

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