In depth comparison and review of Garmin D2 Delta S and Garmin Forerunner 55. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Product Type | Sport watch | Sport watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS, Android |
| Wearing Style | Watch style | Watch style |
| Width | 42 mm | 42 mm |
| Height | 42 mm | 42 mm |
| Depth | 15.4 mm | 11.6 mm |
| Weight | 65 g | 37 g |
| Body Material | Fibre-reinforced polymer | - |
| Protection | Waterproof | Waterproof |
| Colours | - | Monterra grey |
| Clock Display | Yes | Yes |
| FEATURES | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Sensors | Accelerometer, thermometre, gyro sensor, heart rate, barometric altimeter, 3-axis compass | Accelerometer, optical heart sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, stress level | Distance, time, speed, calories burned, sleep activity, heart rate, stress level |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, HRmax, camera remote control, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device, store & play music, Garmin Elevate, TrueUp | Music remote handling, idle alert, Garmin Connect compatible, Body Battery |
| Notifications | SMS, Email | Calendar, Email, social apps |
| Vibrating Alert | Yes | Yes |
| Navigation (GPS) | GPS/GLONASS receiver | GPS receiver |
| Payment Technology | Garmin Pay | - |
| CONNECTIVITY | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Wireless Interface | Bluetooth, Wi-Fi, ANT+ | Bluetooth, ANT+ |
|---|
| DISPLAY | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | Memory-in-Pixel LCD - colour - transflective |
|---|---|---|
| Resolution | 240 x 240 pixels | 208 x 208 pixels |
| Screen Size | 1.2" | 1.04" |
| Screen Protection | Domed sapphire crystal | Chemically strengthened glass |
| INPUT DEVICE | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Type | Touch buttons | Touch buttons |
|---|
| CASE | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Case Size | 42 mm | - |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | Stainless steel | - |
| Case Back | Metal | - |
| Case Details | Rose gold-tone | Black | White | Aqua green |
| BAND | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Width | 20 mm | - |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Leather | Silicone |
| Band Colour | Beige | Black | White | Aqua green |
| STORAGE | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Storage Capacity | 16 GB | - |
|---|
| BATTERY | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Battery Life | 7 day(s) | 14 day(s) |
| Battery Life Details | Smartwatch mode - up to 7 days GPS mode - up to 11 hour(s) GPS with Music mode - up to 4.5 hour(s) UltraTrac mode - up to 25 hour(s) |
GPS mode - up to 20 hour(s) Smartwatch mode - up to 14 days |
| Rechargeable Battery | Yes | Yes |
| MISCELLANEOUS | Garmin D2 Delta S | Garmin Forerunner 55 |
|---|
| Included Accessories | Charging/data cable, silicone wrist strap (white) | Charging/data cable |
|---|---|---|
| Preloaded Software | Garmin Pay, Garmin Pilot | - |
| Max Depth of Water Resistance | 100 m | 50 m |
| Warranty | - | 1-year warranty |
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