Garmin D2 Air X15 vs Garmin Forerunner 745 comparison
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| key specs |
| Strap Colour | Black | Black, Magma Red, Neo Tropic, Whitestone |
| Display Size | 35mm | 30mm |
| Compatible OS | Android and iOS | Android, iOS |
| Strap Material | Silicone | Silicone |
| Dial Shape | Round | Round |
| Display Type | AMOLED | MIP |
| Ideal For | Unisex | - |
| general |
| Brand | Garmin | Garmin |
| Model | D2 Air X15 | Forerunner 745 |
| Release date | October 22, 2025 | September 16, 2020 |
| Model Name | Garmin D2 Air X15 | Forerunner 745 |
| Dial Shape | Round | Round |
| Strap Colour | Black | Black, Magma Red, Neo Tropic, Whitestone |
| Strap Material | Silicone | Silicone |
| Size | Regular | Regular |
| Water Resistance Depth | 5 ATM | - |
| Usage | Fitness & Outdoor | - |
| Ideal For | Unisex | - |
| Touchscreen | - | Yes |
| Water Resistant | - | 5 ATM |
| dimensions |
| Weight (g) | 38.00 | 47.00 |
| Width | - | 43.8 |
| Height | - | 43.8 |
| Thickness | - | 13.3 |
| product details |
| Sensor | Heart Rate Monitor, Stress, Sleep, Pulse Ox blood oxygen | Glonass, Barometric altimeter, Compass, Gyroscope, Acceleraometer, Thermometer |
| Compatible Device | Android and iOS | Android, iOS |
| Notification | Call Notification, Smartphone Apps Notifications | Yes |
| Battery Life | 10 days | 7 hours |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Yes | Yes |
| Third Party App Support | Yes | - |
| Call Features | Make and Receive calls | - |
| Other Connectivity Features | GPS, Galileo, Glonass, Beidou, QZSS | - |
| Wi-Fi | - | Yes |
| platform and storage features |
| Compatible Operating System | Android and iOS | Android, iOS |
| RAM | 8GB | - |
| camera and display features |
| Display Resolution | 454 x 454 | 240x240 |
| Display Size | 35mm | 30mm |
| Display Type | AMOLED | MIP |
| Scratch Resistant | - | Corning Gorilla Glass DX |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | English |
| Number of Buttons | - | 2 |
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