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| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Polar M400 |  Suunto Ambit3 Run | |
|---|---|---|
| Screen resolution | 128 x 128 px | 128 x 128 px |
| Touchscreen | no | no |
| Colour screen | no | no |
| Backlight | yes | yes |
| Polar M400 | Suunto Ambit3 Run | |
|---|---|---|
| Gender |
|
|
| Weight | 1.98 oz | 2.54 oz |
| Polar M400 | Suunto Ambit3 Run | |
|---|---|---|
| Colour of product |
|
|
| Protection features | Water resistant | Water resistant |
| Waterproof depth | 30 | 50 |
| Polar M400 | Suunto Ambit3 Run | |
|---|---|---|
| Heart Rate Monitor | Built-in | Support for HRM chest strap |
| Distance meter | yes | yes |
| Calorie counter | yes | yes |
| Alarm | yes | yes |
| Altimeter | yes | yes |
| Date display | yes | yes |
| Display light | yes | yes |
| Speedometer | yes | yes |
| Stopwatch | yes | yes |
| Timer | yes | yes |
| Polar M400 | Suunto Ambit3 Run | |
|---|---|---|
| Bluetooth | yes | yes |
| GPS | yes | yes |
| Polar M400 | Suunto Ambit3 Run | |
|---|---|---|
| Battery type | Built-in | Lithium-Ion |
| Battery life (running) | 8.0 h | 100.0 h |
| Battery life (standby mode) | 24.0 day | 14.0 day |
| Pros | ||
|---|---|---|
| Cons |
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