Garmin Forerunner 10 vs Garmin Forerunner 15

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Forerunner 10 compared with Forerunner 15

	GarminForerunner 10	GarminForerunner 15
Overview
Released
Released	2012	2014
Display
Case sizes
Case sizes	52.2 mm or 57.2 mm	52 mm or 57 mm
Panel
Panel	–	Memory-in-pixel
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Monochrome display, 55 × 32 pixels; 2.1 × 2.0 cm on the small version and 2.5 × 2.4 cm on the large version. Garmin does not identify its panel technology.	Monochrome memory-in-pixel display, 55 × 32 pixels; 2.1 × 2.0 cm on the small version and 2.5 × 2.4 cm on the large version, with a backlight and four-button control.
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	Built-in high-sensitivity GPS; no heart-rate sensor or compatible heart-rate and foot-pod accessories.	Built-in GPS; supports a chest-worn heart-rate monitor and optional ANT+ foot pod for indoor pace and distance.
Health features
Health features	–	Daily steps, calories and inactivity reminders; heart-rate recording requires the chest strap sold in some bundles.
Fitness features
Fitness features	Outdoor time, distance, pace, calories, personal records, Auto Lap, Auto Pause, Virtual Pacer and run/walk intervals. No all-day step tracking.	Outdoor pace, distance, personal records, Auto Lap, Auto Pause, Virtual Pacer and run/walk intervals; indoor distance requires the foot pod.
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 35 days	Up to 35 days
Mobile data option
Mobile data option	No	No
Works with
Works with	No phone pairing	No phone pairing
Battery life detail
Battery life detail	Up to five weeks in watch mode or five hours with GPS training.	Up to five weeks in watch/activity-tracking mode or eight hours with GPS on.
Charging
Charging	Rechargeable lithium-ion battery with a USB charging and data clip.	Rechargeable lithium-ion battery with a USB charging and data cable.
Connectivity
Connectivity	USB cable uploads runs to Garmin Connect through a computer; no Bluetooth or direct smartphone pairing.	USB connection to a Mac or PC for Garmin Connect uploads; no Bluetooth or direct smartphone sync. ANT+ supports optional heart-rate and foot-pod accessories.
Storage
Storage	Seven runs on the watch, with up to 50 laps per activity on Garmin's Taiwan specification.	Seven activities of on-watch history.
Design
Weight (lightest version)
Weight (lightest version)	36 g	36 g
Software
Software	Garmin	Garmin
Case materials
Case materials	Plastic case and band; 50 m water resistance.	Plastic case and band; 5 ATM water rating.
Size
Size	Small 4.01 × 5.22 × 1.57 cm and 36 g; large 4.55 × 5.72 × 1.57 cm and 43 g. Longest case dimensions appear in the size comparison.	Small 4.0 × 5.2 × 1.6 cm and 36 g; large 4.6 × 5.7 × 1.6 cm and 43 g. The longest case dimensions appear in the size comparison.
Colours
Colours	Original green/white and pink/white small versions and black/red large version; later colours varied by region.	Small black/green, teal/white and violet/white; large black/blue and red/black.
In the box
In the box	Watch, USB charging clip and manual.	Watch, charging/data cable and manual; a chest heart-rate monitor was included in some bundles.