Garmin Forerunner 230 vs Garmin Forerunner 235

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Forerunner 230 compared with Forerunner 235

	GarminForerunner 230	GarminForerunner 235
Overview
Released
Released	November 2015	November 2015
Display
Case sizes
Case sizes	45 mm	45 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.	1.23-inch (31.1 mm) sunlight-readable colour display, 215 x 180 pixels, with button controls.
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.	GPS, GLONASS, Garmin Elevate optical wrist heart rate and accelerometer.
Health features
Health features	Daily steps, calories and sleep tracking; no built-in optical heart-rate sensor.	All-day wrist heart rate, steps, calories and sleep tracking.
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 and cycling tracking, VO2 max estimate, race predictor, recovery advisor, indoor distance from the accelerometer and optional foot-pod and cycling speed/cadence sensors.
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 35 days	Up to 9 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.	Up to nine days as a watch with activity tracking, notifications and heart rate; up to 11 hours in training mode.
Charging
Charging	Rechargeable lithium-ion battery with charging/data clip.	Rechargeable lithium-ion battery.
Connectivity
Connectivity	Bluetooth and ANT+; smart notifications, Connect IQ, Garmin Connect automatic uploads, LiveTrack through a paired phone and phone music controls.	Bluetooth and ANT+; smart notifications, Connect IQ, phone music controls and Garmin Connect Mobile sync. No on-watch music storage.
Storage
Storage	Stores 200 hours of activity history.	–
Design
Weight (lightest version)
Weight (lightest version)	41 g (better)	42 g
Software
Software	Garmin	Garmin
Case materials
Case materials	5 ATM water rating.	5 ATM water rating.
Size
Size	45 x 45 x 11.8 mm; 41 g.	45 x 45 x 11.7 mm; 42 g.
Colours
Colours	Black case with force yellow band.	Black and red.