| key specs |
| Display Size | 49mm | - |
| Dial Shape | Rectangle | Round |
| Display Type | OLED Retina | AMOLED |
| Ideal For | Unisex | Unisex |
| Strap Colour | - | Black, Blue, White, Red, Green, and Yellow |
| Compatible OS | - | Android, iOS |
| Strap Material | - | Silicone |
| general |
| Brand | Apple | Xiaomi |
| Model | Watch Ultra | Watch Color 2 |
| Release date | September 7, 2022 | September 28, 2021 |
| Model Name | Watch Ultra | Xiaomi Watch Color 2 |
| Dial Shape | Rectangle | Round |
| Size | Large | Regular |
| Touchscreen | Yes | Yes |
| Water Resistant | Yes | Yes |
| Water Resistance Depth | 40m | 5ATM |
| Usage | Fitness & Outdoor | - |
| Ideal For | Unisex | Unisex |
| Strap Material | - | Silicone |
| Interchangeable Strap | - | Yes |
| Strap Colour | - | Black, Blue, White, Red, Green, and Yellow |
| Dial Colour | - | Classic Black, Silver |
| product details |
| Sensor | Compass, Always-On Altimeter, third-gen optical heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor | Heart rate sensor, acceleration sensor, gyroscope, geomagnetic sensor, barometric sensor, ambient light sensor, SpO2 sensor |
| Notification | Yes | Yes |
| Battery Type | Lithium Ion | - |
| Rechargeable Battery | Yes | Yes |
| Closure | - | Buckle |
| Compatible Device | - | Android, iPhone |
| Battery Life | - | 12 days |
| Charger Type | - | Proprietary, Magnetic cradle |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Yes | Yes |
| Wi-Fi | Yes | - |
| GPS | Yes | Yes |
| Call Features | International Emergency Calling | - |
| Other Connectivity Features | Emergency SOS | - |
| platform and storage features |
| Operating System | watchOS 9 | - |
| Compatible Operating System | - | Android, iOS |
| camera and display features |
| Display Size | 49mm | - |
| Display Type | OLED Retina | AMOLED |
| Backlight Display | Yes | - |
| Other Display Features | LTPO OLED Always-On Retina display | - |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | - |
| Compass | Yes | Yes |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Other Fitness Features | Blood Oxgen Sensor, ECG sensor | 117 sports modes, menstrual cycle tracking, 24-hour heart rate monitoring, Breathing training, sleep detection, SpO2 tracking |
| Chronograph | - | Yes |
| Number of Buttons | - | 2 |
| Other Watch Functions | - | Xiao AI, 200 watch faces |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |