Garmin Forerunner 230 vs Garmin Forerunner 25

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Forerunner 230 compared with Forerunner 25

	GarminForerunner 230	GarminForerunner 25
Overview
Released
Released	November 2015	2015
Display
Case sizes
Case sizes	45 mm	43.9 mm or 47 mm
Panel
Panel	Memory-in-pixel	Memory-in-pixel
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Sunlight-readable colour display, listed as 1.0 inch (25.4 mm) on Garmin Singapore's exact product page, 215 x 180 pixels, with button controls.	Monochrome transflective memory-in-pixel display, 128 × 128 pixels; 18.5 × 18.5 mm in the small version and 23 × 23 mm in the large version.
Health and fitness
ECG
ECG	No	No
Blood oxygen
Blood oxygen	No	No
Skin temperature
Skin temperature	No	No
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	No	No
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Single-band
Water resistance
Water resistance	50 m	50 m
Sensors
Sensors	GPS, GLONASS and accelerometer; heart-rate data requires an optional external sensor.	Built-in GPS and accelerometer; heart rate requires an optional ANT+ chest strap, and an optional foot pod is supported.
Health features
Health features	Daily steps, calories and sleep tracking; no built-in optical heart-rate sensor.	Daily steps, automatic step goal, inactivity bar and sleep monitoring; heart-rate zones require a paired chest strap.
Fitness features
Fitness features	Outdoor and indoor running, cycling, advanced workouts and pace alerts; VO2 max estimate, recovery advisor and race predictor with a compatible heart-rate strap.	Running pace, distance, personal records, Virtual Pacer, Auto Pause, Auto Lap and time, distance and run/walk alerts; indoor distance from its accelerometer.
Safety features
Safety features	–	Live Tracking shares a run through a paired compatible smartphone.
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 35 days	Up to 70 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone and Android	iPhone and Android
Battery life detail
Battery life detail	Up to five weeks in smartwatch mode with activity tracking and notifications, or 16 hours in training mode.	Small version up to eight weeks in watch mode or eight hours of GPS training; large version up to ten weeks or ten hours respectively.
Charging
Charging	Rechargeable lithium-ion battery with charging/data clip.	Rechargeable lithium-ion battery; charging and data cable supplied.
Connectivity
Connectivity	Bluetooth and ANT+; smart notifications, Connect IQ, Garmin Connect automatic uploads, LiveTrack through a paired phone and phone music controls.	Bluetooth Low Energy syncs to Garmin Connect Mobile and displays paired-phone notifications; ANT+ supports optional heart-rate and foot-pod accessories.
Storage
Storage	Stores 200 hours of activity history.	Seven activities of on-watch history.
Design
Weight (lightest version)
Weight (lightest version)	41 g	31 g (better)
Software
Software	Garmin	Garmin
Case materials
Case materials	5 ATM water rating.	Silicone band and 5 ATM water rating.
Size
Size	45 x 45 x 11.8 mm; 41 g.	Small version 35.9 × 43.9 × 13.9 mm, 31 g; large version 40.2 × 47 × 13.9 mm, 39 g. Longest case dimensions appear in the size comparison.
Colours
Colours	Black case with force yellow band.	Large versions in black/blue and black/red; small versions in black/violet and white/pink.
In the box
In the box	–	Watch, charging/data cable and manual; some bundles also included a heart-rate chest strap.