
Garmin · Forerunner
Forerunner 405
A GPS running watch with a touch-sensitive bezel, structured workouts and wireless computer uploads.
- Type
- Smart and sports
- Sizes
- 48 mm
- Movement
- –
- Power reserve
- –
- Display
- –
- Battery
- 8 h
- Water
- –
- GPS
- Single-band
- Weight
- 60 g
What reviewers say
WIRED and BikeRadar valued the training tools and wireless activity uploads, but both reported reception limitations. They disagreed on the bezel; WIRED found it easy to use while running, while BikeRadar struggled with menus and unintended inputs when wet. WIRED also criticised the stiff heart-rate strap.
From wired.com and bikeradar.com
Specifications
Report a wrong or missing specDisplay
- Case sizes
- 48 mm
- Always-on display
- Yes
- Display detail
- Backlit monochrome screen, 1.06-inch diagonal and 124 × 95 pixels; a touch-sensitive bezel and two buttons control the watch. Panel technology is unpublished in the maker's specification.
Health and fitness
- ECG
- No
- Blood oxygen
- No
- Skin temperature
- No
- Sleep apnoea alerts
- No
- High blood pressure alerts
- No
- Body composition
- No
- Fall detection
- No
- Crash detection
- No
- GPS
- Single-band
- Sensors
- High-sensitivity GPS receiver; optional ANT+ heart-rate chest strap, foot pod and cycling speed/cadence sensor. No optical wrist sensor.
- Fitness features
- Pace, distance, time, calories, custom and interval workouts, Virtual Partner, Auto Lap and Auto Pause.
- Safety features
- Stores up to 100 locations and provides direction to a saved location; no base maps.
Battery and connections
- Battery life (maker's claim)
- Up to 8 hours
- In low-power mode
- Up to 14 days
- Mobile data option
- No
- Works with
- No phone pairing
- Battery life detail
- Rechargeable lithium-ion battery; approximately eight hours with GPS or two weeks in power-save mode.
- Charging
- Contact charging clip and AC adapter.
- Connectivity
- ANT+ Sport wireless data transfer to a computer through a USB ANT stick; Garmin Connect and Garmin Training Center analysis. No direct phone pairing.
- Storage
- Around 1,000 lap records; Garmin Taiwan quotes approximately twenty hours of track points at one point every four seconds.
Design
- Weight (lightest version)
- 60 g
- Software
- Garmin
- Case materials
- IPX7 immersion protection, one metre for thirty minutes; not intended for swimming.
- Size
- 48 × 71 × 16 mm; approximately 60 g. Width is used as the case size; the English manual instead lists 47.75 × 70.5 × 16.4 mm.
- In the box
- Watch, USB ANT stick, AC charger and manual; heart-rate strap included in some bundles.
Pros and cons
Pros
- Custom workouts and Virtual Partner pacing
- Wireless uploads through the supplied USB ANT stick
- Optional heart-rate, foot-pod and cycling sensors
Cons
- No phone pairing or wrist heart-rate sensor
- IPX7 protection is not a swimming rating
- Touch bezel replaces most physical controls
Closest rivals
Model | Type | Sizes | Movement | Power reserve | Display | Battery | Water | GPS | Weight | Released |
|---|---|---|---|---|---|---|---|---|---|---|
| Smart and sports | 47.75 mm | – | – | – | 8 h | – | Single-band | 60 g | 2009 | |
| Smart and sports | 48 mm | – | – | – | 8 h | – | Single-band | 60 g | 2010 | |
| Smart and sports | 45 mm | – | – | – | 8 h | – | Single-band | 52 g | 2010 |
Newer model: Forerunner 405CX.
Sources
- garmin.com.tw/products/discontinued/forerunner405
- static.garmin.com/pumac/FR405_OM_EN.pdf
- www8.garmin.com/de/pdf/pressemitteilung/Garmin_PMD_Forerunner_405_lang.pdf
Photo: garmin.com.tw


