Garmin Forerunner 645 Music
- Screen 1.23 inch MIP
- Battery life up to 7 days
- Water resistance 5 ATM (50 metres)
- Sensors Accelerometer, GPS/GLONASS, compass, optical HR monitor, barometric altimeter, gyroscope, thermometer
- Date March 2018
Specs
General
| Physical size | 42.5 x 42.5 x 13.5 mm |
| Material | Plastic with silicon band, stainless steel bezel |
| Charging | USB |
| Battery | Rechargeable lithium-ion |
| Battery life | Smartwatch Mode: Up to 7 days. GPS mode with music: Up to 5 hours |
| Water resistance | 5 ATM |
| Weight | 42.2 grams |
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) |
| Display size | 1.23" (31.1 mm) diameter |
| Display resolution | 240 x 240 pixels |
Sensors
| Accelerometer | Yes |
| Barometric altimeter | Yes |
| Compass | Yes |
| Galvanic skin response | No |
| Geomagnetic | No |
| Gyroscope | Yes |
| Optical heart rate | Yes |
| Electrical heart rate | No |
| SpO2 | No |
| Temperature | No |
| GPS | Yes |
| GALILEO | Yes |
| GLONASS | Yes |
| QZSS | No |
| Beidou | No |
| Ambient light sensor | No |
| Vibration motor | Yes |
| Microphone | No |
| Speakers | No |
Health & activity tracking
| Steps | Yes |
| Distance | Yes |
| Calories burned | Yes |
| Sports tracking | Yes |
| Floors | Yes |
| Sleep | Yes |
| Heart rate | Yes |
| Stress | Stress test |
| Blood oxygen | No |
| Respiration rate | No |
| UV exposure | No |
| Skin temperature | No |
| Hydration level | No |
| HRV | No |
| ECG | No |
| Calorie intake | No |
| Blood pressure | No |
| Glucose | No |
| Other | Automatic rep counting in the gym. Features physiological measurements (stress score, performance condition and lactate threshold) |
Daily smart features
| Smartphone notifications | Yes |
| Smartphone music control | Yes |
| On-board music storage | Optional (storage for 500 songs) |
| Connected pay | Yes |
| Cellular | No |
| Connectivity | Bluetooth, Ant+, Wi-Fi |
| Operating system | Proprietary |
| Memory | 200 hours of activity data |
Disclaimer Note
These technical specs are correct to the best of our knowledge at the time of publishing.
