vs
7.5Display2.1
Dimensions
Size comparison
Descent Mk3i 51mmFlex Smart
| Descent Mk3i 51mm | Flex Smart | Difference | |
|---|---|---|---|
| Case size | 51 mm | 44 mm | +7 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Descent Mk3i 51mm better than Flex Smart?
- AMOLED / OLED displayYes · Flex Smart: No
- Screen size1.4″ vs 1.1″+27%
Why is Flex Smart better than Descent Mk3i 51mm?
Flex Smart has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 44 mm |
| Weight | 77.8 g | — |
| Thickness | 16.4 mm | — |
| Height | 51 mm | — |
| Width | 51 mm | — |
| Case material | Titanium | — |
| Sapphire crystal | Yes | — |
| Lens / cover glass | sapphire crystal | — |
| Strap material | silicone or DLC coated titanium | Silikon, Edelstahl |
| Water resistance | 20 ATM | — |
| Water rating (maker) | Dive (200 meters) | — |
| Rated dive depth | 200 m | — |
| Colours | — | Silver, Red |
| Display | ||
| Screen size | 1.4″ | 1.1″ |
| Display technology | AMOLED | LCD |
| Panel | AMOLED | LCD |
| AMOLED / OLED display | Yes | No |
| Touchscreen | Yes | — |
| Resolution (width) | 454 px | — |
| Resolution (height) | 454 px | — |
| Pixel density | 324 ppi | — |
| Battery | ||
| Battery life (smartwatch mode) | 25 days | — |
| Battery life with always-on display | 10 days | — |
| Battery saver mode | 31 days | — |
| GPS battery life | 76 h | — |
| GPS battery life (dual-band) | 48 h | — |
| Battery capacity | — | 150 mAh |
| Wireless charging | No | — |
| Charging | Garmin proprietary clip charger | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | — |
| HRV tracking | Yes | — |
| Sleep tracking | Yes | — |
| Sensors | GPS, GLONASS, Galileo, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor, Depth sensor | — |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Dual-band GPS | Yes | — |
| Satellite systems | GLONASS, GALILEO | — |
| Offline maps | Yes | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Multisport / triathlon mode | Yes | — |
| Sport profiles | 98 | — |
| Dive mode | Yes | — |
| LED flashlight | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | — |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | — | 2 |
| ANT+ sensors | Yes | — |
| Smart features | ||
| Music on the watch | Yes | — |
| Storage | 32 GB | — |
| Third-party apps | Yes | — |
| Platform | ||
| Operating system | Garmin OS | — |
| Platform | Proprietary | — |
| Works with | iOS, Android | iOS, Android |
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