| key specs | 
| Strap Colour | Black | - | 
| Display Size | 35mm | - | 
| Compatible OS | Android and iOS | Android, iPhone | 
| Strap Material | Silicone | Leather | 
| Dial Shape | Round | Round | 
| Display Type | AMOLED | - | 
| Ideal For | Unisex | Unisex | 
| general | 
| Brand | Garmin | Garmin | 
| Model | D2 Air X15 | Marq Expedition | 
| Release date | October 22, 2025 | - | 
| Model Name | Garmin D2 Air X15 | Marq Expedition | 
| Dial Shape | Round | Round | 
| Strap Colour | Black | - | 
| Strap Material | Silicone | Leather | 
| Size | Regular | Regular | 
| Water Resistance Depth | 5 ATM | 10 ATM | 
| Usage | Fitness & Outdoor | - | 
| Ideal For | Unisex | Unisex | 
| Interchangeable Strap | - | Yes | 
| Water Resistant | - | Yes | 
| Dial Material | - | Titanium | 
| dimensions | 
| Weight (g) | 38.00 | 87.00 | 
| Thickness | - | 14.2 | 
| Diameter | - | 46 | 
| product details | 
| Sensor | Heart Rate Monitor, Stress, Sleep,  Pulse Ox blood oxygen | GPS, GLONASS, Galileo, Garmin Elevate wrist heart rate monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Pulse Ox | 
| Compatible Device | Android and iOS | Android, iPhone | 
| Notification | Call Notification, Smartphone Apps Notifications | Yes | 
| Battery Life | 10 days | Up to 12 days in smartwatch mode | 
| Notification Type | - | Smart notifications | 
| 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 | Compatible with Garmin Connect Mobile, Garmin Pay | 
| Wi-Fi | - | Yes | 
| GPS | - | Yes | 
| Messaging Support | - | Yes | 
| platform and storage features | 
| Compatible Operating System | Android and iOS | Android, iPhone | 
| RAM | 8GB | - | 
| Internal Memory | - | 32GB | 
| camera and display features | 
| Display Resolution | 454 x 454 | 240 x 240 pixels | 
| Display Size | 35mm | - | 
| Display Type | AMOLED | - | 
| 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 | - | 
| Other Fitness Features | - | Gym activity profiles, Cardio workouts, Strength workouts, Automatic rep counting, Interval training, Advanced workouts, Heat and altitude acclimation | 
| Other Watch Functions | - | Weather, Controls smartphone music, Plays and controls watch music, Find My Phone, Find My Watch |