Side by side comparison and review of Fitbit Ionic and Garmin Forerunner 45S. Compare design, displays, functions, batteries and other key specifications and features to simplify the choice of your perfect smartwatch. Our goal is to make it easier for you to decide on the watch that will best meet your expectations by revealing the main differences between the products.
| GENERAL | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Product Type | Smart watch | Sport watch |
|---|---|---|
| Supported Host Device OS | iOS, Android, Windows Phone | iOS, Android |
| Wearing Style | Watch style | Watch style |
| Width | 38.6 mm | 39.5 mm |
| Height | 12.4 mm | 39.5 mm |
| Lenght | 256.5 mm | - |
| Depth | 12.4 mm | 11.4 mm |
| Weight | 50 g | 32 g |
| Body Material | Aerospace-grade aluminium | - |
| Protection | Water-resistant | Waterproof |
| Colours | Charcoal, smoke grey | Burnt orange, slate blue | Blue grey, silver grey | - |
| Clock Display | - | Yes |
| FEATURES | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Sensors | Accelerometer, altimeter, heart rate | Accelerometer, heart rate |
|---|---|---|
| Tracking Data | Distance, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, pace, sleep stages, swim laps, active time | Distance, time, speed, calories burned, sleep activity, heart rate, stress level |
| Goal Setting | Yes | Yes |
| Features | PurePulse heart rate technology, automatic exercise recognition, SmartTrack | Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device |
| Notifications | Missed calls, calendar, SMS, social apps | Calendar, Email, social apps |
| Vibrating Alert | Yes | Yes |
| CONNECTIVITY | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Wireless Interface | Bluetooth, IEEE 802.11b/g/n, NFC | Bluetooth, ANT+ |
|---|
| DISPLAY | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Type | LCD - colour | Memory-in-Pixel LCD - colour - transflective |
|---|---|---|
| Resolution | - | 208 x 208 pixels |
| Screen Size | - | 1.04" |
| Screen Protection | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| INPUT DEVICE | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Type | Touch sensitive screen | - |
|---|
| CASE | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Case Shape | - | Round |
|---|---|---|
| Case Details | Silver grey aluminium | White | Iris | Black |
| BAND | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Band Type | Sport band | Band |
|---|---|---|
| Band Size | - | S |
| Fits Wrist with Circumference | - | 124-185 mm |
| Changeable | - | Yes |
| Clasp Type | - | Buckle |
| Band Material | - | Silicone |
| Band Colour | Ink blue/ice grey | White | Iris | Black |
| BATTERY | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Battery Life | 4 day(s) | - |
|---|---|---|
| Battery Life Details | - | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
| MISCELLANEOUS | Fitbit Ionic | Garmin Forerunner 45S |
|---|
| Included Accessories | Charging cable, 2 wristbands (S+L) | Charging/data cable |
|---|---|---|
| Max Depth of Water Resistance | 50 m | 50 m |
| Warranty | 1-year warranty | - |
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