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Garmin Forerunner 645 Music · Garmin
Garmin · Forerunner
Forerunner 645 Music
A 42.5 mm GPS running watch with training metrics, Garmin Pay and storage for up to 500 songs.
- Type
- Smart and sports
- Sizes
- 42.5 mm
- Movement
- –
- Power reserve
- –
- Display
- Memory-in-pixel
- Battery
- 7 days
- Water
- 50 m
- GPS
- Single-band
- Weight
- 42.2 g
Specifications
Report a wrong or missing specDisplay
- Case sizes
- 42.5 mm
- Panel
- Memory-in-pixel
- Always-on display
- Yes
- Display detail
- 1.2-inch (30.4 mm) sunlight-readable transflective colour MIP display, 240 x 240 pixels, with five-button control.
- Screen protection
- Chemically strengthened glass.
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
- Water resistance
- 50 m
- Sensors
- GPS, GLONASS, Garmin Elevate wrist heart rate, barometric altimeter, compass, gyroscope, accelerometer and thermometer.
- Health features
- All-day heart rate, steps, sleep and intensity minutes.
- Fitness features
- Running, indoor running, cycling, pool swimming, skiing and rowing profiles; training status and load, aerobic and anaerobic training effect, VO2 max, recovery time and breadcrumb course guidance. Detailed running dynamics require an HRM strap or Running Dynamics Pod.
Battery and connections
- Battery life (maker's claim)
- Up to 7 days
- Mobile data option
- No
- Works with
- iPhone and Android
- Battery life detail
- Up to seven days in smartwatch mode or five hours with GPS and music according to the exact model's Garmin Singapore specification table. Its prose also says 14 GPS hours without stating a music-use condition.
- Charging
- Rechargeable battery with Garmin charging cable.
- Connectivity
- Bluetooth, ANT+ and Wi-Fi; Garmin Pay, smart notifications, Connect IQ, LiveTrack and on-watch music playback to Bluetooth headphones.
- Storage
- Up to 500 songs and 200 hours of activity history.
Design
- Weight (lightest version)
- 42.2 g
- Software
- Garmin
- Case materials
- Stainless steel bezel, chemically strengthened glass and silicone band; 5 ATM water rating.
- Size
- 42.5 x 42.5 x 13.5 mm; 42.2 g.
- Bands
- Quick-release 20 mm band; fits wrists 127–204 mm.
- Colours
- Black band and case with rose-gold hardware.
Pros and cons
Pros
- On-watch music playback and Garmin Pay
- Training status, load and breadcrumb course guidance
- Stainless steel bezel with quick-release bands
Cons
- Five-hour GPS battery claim when playing music
- Detailed running dynamics require an accessory
Closest rivals
Model | Type | Sizes | Movement | Power reserve | Display | Battery | Water | GPS | Weight | Released |
|---|---|---|---|---|---|---|---|---|---|---|
| Smart and sports | 42.5 mm | – | – | Memory-in-pixel | 7 days | 50 m | Single-band | 42.2 g | 2018 | |
| Smart and sports | 42 mm | – | – | Memory-in-pixel | 7 days | 50 m | Single-band | 38.5 g | Apr 2019 | |
| Smart and sports | 42 mm | – | – | Memory-in-pixel | 7 days | 50 m | Single-band | 38.5 g | Apr 2019 |
Sources
- garmin.com.sg/products/discontinued/forerunner-645-music-rose-black
- garmin.com/en-US/newsroom/press-release/sports-fitness/2018-garmin-introduces-t…
Photo: Garmin
- Garmin Forerunner 645 Music, rose-gold bezel and black band, front activity-list view: Garmin
- Garmin Forerunner 645 Music, rose-gold bezel and black band, three-quarter stress-display view: Garmin
- Garmin Forerunner 645 Music, rose-gold bezel and black band, side profile: Garmin
- Garmin Forerunner 645 Music, rose-gold bezel and black band, rear sensor and clasp view: Garmin
- Garmin official Forerunner 645 family press lineup with sandstone, cerise and black bands: Garmin
- Garmin Forerunner 645 Music with black band, shared manufacturer three-quarter photograph: Garmin
- Garmin Forerunner 645 Music with cerise band, three-quarter view: Garmin
- Garmin Forerunner 645 Music with slate bezel and black band, three-quarter view: Garmin
