Garmin fēnix 2 vs Garmin Forerunner 25

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fēnix 2 compared with Forerunner 25

	Garminfēnix 2	GarminForerunner 25
Overview
Released
Released	March 2014	2015
Display
Case sizes
Case sizes	49 mm	43.9 mm or 47 mm
Panel
Panel	LCD	Memory-in-pixel
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Transflective monochrome LCD, 31 mm diameter and 70 × 70 pixels; negative display with red LED backlight and physical buttons.	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	High-sensitivity GPS receiver, barometric altimeter, three-axis compass and accelerometer. Optional ANT+ heart-rate, HRM-Run, foot-pod, speed/cadence, power and tempe temperature sensors; no optical wrist heart-rate 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, automatic step goal, inactivity bar and sleep monitoring; heart-rate zones require a paired chest strap.
Fitness features
Fitness features	Running, cycling, pool and open-water swimming, multisport, hiking and skiing profiles; advanced workouts, Virtual Partner, Training Effect, VO2 max estimates, race prediction and recovery advice. Running dynamics require an HRM-Run chest strap; indoor pace and distance use the accelerometer.	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	Breadcrumb routes, waypoint navigation and TracBack to retrace the recorded route; no preloaded base maps.	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	Rechargeable 500 mAh lithium-ion battery; up to five weeks in watch mode, sixteen hours with normal GPS recording or fifty hours in UltraTrac with one-minute GPS polling, according to the owner's manual.	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	USB contact charging/data cradle and AC adapter.	Rechargeable lithium-ion battery; charging and data cable supplied.
Connectivity
Connectivity	Bluetooth Smart phone notifications, Garmin Connect uploads and LiveTrack; USB computer transfer and ANT+ sensor connections. Garmin's 2015 catalogue confirms iPhone 4S or later and most Bluetooth Smart Android devices running Android 4.3 or later. The manual says ANT+ sensors cannot connect while Bluetooth is enabled.	Bluetooth Low Energy syncs to Garmin Connect Mobile and displays paired-phone notifications; ANT+ supports optional heart-rate and foot-pod accessories.
Storage
Storage	20 MB internal memory; up to 1,000 waypoints, fifty routes, 10,000 track points and 100 saved tracks.	Seven activities of on-watch history.
Design
Weight (lightest version)
Weight (lightest version)	90.6 g	31 g (better)
Software
Software	Garmin	Garmin
Case materials
Case materials	Curved mineral-glass lens, shock-resistant housing and polyurethane wristband; 5 ATM water rating.	Silicone band and 5 ATM water rating.
Size
Size	49 × 49 × 17 mm; 90.6 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	–	Large versions in black/blue and black/red; small versions in black/violet and white/pink.
Bands
Bands	Polyurethane wristband; additional hook-and-loop fabric strap accommodates larger wrists or wearing over a jacket.	–
In the box
In the box	Watch, fabric wrist-strap kit, USB charging/data cable, AC adapter and quick-start manual; HRM-Run chest strap included in the Performer Bundle.	Watch, charging/data cable and manual; some bundles also included a heart-rate chest strap.