 |  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Fitbit Ionic |  Garmin Forerunner 645 Music | |
|---|---|---|
| Touchscreen | yes | no |
| Colour screen | yes | yes |
| Fitbit Ionic | Garmin Forerunner 645 Music | |
|---|---|---|
| Gender |
|
|
| Width | 1.5 in | 1.67 in |
| Depth | 1.5 in | 1.67 in |
| Weight | 1.76 oz | 1.49 oz |
| Thickness | 0.47 in | 0.53 in |
| Fitbit Ionic | Garmin Forerunner 645 Music | |
|---|---|---|
| Colour of product |
|
|
| Protection features | Water resistant | Water resistant |
| Waterproof depth | 50 | 5 |
| Fitbit Ionic | Garmin Forerunner 645 Music | |
|---|---|---|
| Heart Rate Monitor | Built-in | Built-in |
| Calorie counter | yes | yes |
| Alarm | yes | yes |
| Altimeter | yes | yes |
| Date display | yes | yes |
| Pedometer | yes | yes |
| Sleep reading | yes | yes |
| Timer | yes | yes |
| Vibration alarm | yes | yes |
| Fitbit Ionic | Garmin Forerunner 645 Music | |
|---|---|---|
| Bluetooth | yes | yes |
| GLONASS | yes | yes |
| GPS | yes | yes |
| Fitbit Ionic | Garmin Forerunner 645 Music | |
|---|---|---|
| Battery life (running) | 10.0 h | 12.0 h |
| Battery life (standby mode) | 4.0 day | 7.0 day |
| Pros | ||
|---|---|---|
| Cons |
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