Technical Specification
M400
| Battery type: | 190 mAh Li-pol rechargeable battery |
| Operating time: |
In continuous use: Up to 8 hours with GPS and heart rate sensor In time mode with daily activity monitoring: Approximately 30 days |
| Operating temperature: | -10 °C to +50 °C / 14 °F to 122 °F |
| Training device materials: | Stainless steel, Polycarbonate/acrylonitrile butadiene styrene, Acrylonitrile butadiene styrene, Thermoplastic urethane, Polymethylmetacrylate, Silicone |
| Watch accuracy: | Better than ± 0.5 seconds / day at 25 °C / 77 °F temperature |
| GPS accuracy: | Distance ±2%, speed ±2 km/h |
| Altitude resolution: | 1 m |
| Ascent/Descent resolution: | 5 m |
| Maximum altitude: | 9000 m / 29525 ft |
| Sample rate: | 1 s |
| Accuracy of heart rate monitor: | ± 1% or 1 bpm, whichever larger. Definition applies to stable conditions. |
| Heart rate measuring range: | 15-240 bpm |
| Current speed display range: |
0-399 km/h 247.9 mph (0-36 km/h or 0-22.5 mph (when measuring speed with Polar stride sensor) |
| Water resistance: | 30 m (suitable for bathing and swimming) |
| Memory capacity: | 30 h training with GPS and heart rate depending on your language settings |
| Display resolution: | 128 x 128 |
H7 Heart Rate Sensor
| Battery life: | 200 h |
| Battery type: | CR 2025 |
| Battery sealing ring: | O-ring 20.0 x 1.0 Material FPM |
| Operating temperature: | -10 °C to +50 °C/14 °F to 122 °F |
| Connector material: | Polyamide |
| Strap material: | 38% Polyamide, 29% Polyurethane, 20% Elastane, 13% Polyester |
| Water resistance: | 30 m |
Uses Bluetooth® Smart wireless technology.
Polar FlowSync Software
To use FlowSync software you need a computer with Microsoft Windows or Mac operating system with an internet connection and a free USB port.
Check the latest compatibility information from support.polar.com.
Polar Flow mobile application compatibility
Check the latest compatibility information from support.polar.com.
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