Garmin D2 Mach 2 vs Fitbit Ionic comparison
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| key specs |
| Display Size | 35mm | 32mm |
| Dial Shape | Round | - |
| Ideal For | Unisex | Unisex |
| Compatible OS | - | Android, iOS |
| Strap Material | - | Elastomer |
| general |
| Brand | Garmin | Fitbit |
| Model | D2 Mach 2 | Ionic |
| Release date | October 22, 2025 | August 1, 2017 |
| Model Name | Garmin D2 Mach 2 | - |
| Dial Colour | Black | - |
| Dial Shape | Round | - |
| Water Resistant | 10 ATM | Yes |
| Ideal For | Unisex | Unisex |
| Strap Material | - | Elastomer |
| Size | - | Regular |
| Touchscreen | - | Yes |
| Water Resistance Depth | - | 50 metres |
| dimensions |
| Width | 47 | - |
| Height | 47 | - |
| Thickness | 13.8 | - |
| Weight (g) | 73.00 | 303.30 |
| product details |
| Talk time | 14 | - |
| Sensor | - | 3-axis Accelerometer, 3-axis Gyroscope, Optical Heart Rate Sensor, Altimeter, Ambient Light Sensor |
| Compatible Device | - | Android, iPhone |
| Notification | - | Yes |
| Notification Type | - | Vibration |
| Battery Type | - | Lithium Polymer |
| Charge Time | - | 120 minutes |
| Stand By Time | - | Upto 6 Days |
| Rechargeable Battery | - | Yes |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Yes | Yes |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| Third Party App Support | Yes | - |
| Call Features | Yes | - |
| Other Connectivity Features | Glonass, Galileo, Beidou, QZSS | NFC |
| camera and display features |
| Display Resolution | 454 x 454 | 240x180 |
| Display Size | 35mm | 32mm |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Chronograph | - | Yes |
| Number of Buttons | - | 3 |
| platform and storage features |
| Operating System | - | Fitbit OS |
| Compatible Operating System | - | Android, iOS |
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