| key specs |
| Display Size | 49mm | 42mm |
| Compatible OS | iOS | - |
| Dial Shape | Rectangle | - |
| Display Type | OLED Retina | Super AMOLED |
| Ideal For | Unisex | Unisex |
| Strap Material | - | Silicone |
| general |
| Brand | Apple | Samsung |
| Model | Watch Ultra 2 | Galaxy Watch 4G (42mm) |
| Release date | September 12, 2023 | August 22, 2018 |
| Model Name | Watch Ultra 2 | Galaxy Watch 4G |
| Dial Shape | Rectangle | - |
| Size | Large | Regular |
| Touchscreen | Yes | Yes |
| Water Resistant | Yes | 5ATM, MIL-STD-810G |
| Water Resistance Depth | 100m | - |
| Usage | Fitness & Outdoor | - |
| Ideal For | Unisex | Unisex |
| Strap Material | - | Silicone |
| Interchangeable Strap | - | Yes |
| product details |
| Maximum Operating Altitude | 9000 | - |
| Sensor | Compass, Always-On Altimeter, heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor | Accelerometer, Barometer, Gyroecope, Heart Rate Sensor, Ambient Light Sensor |
| Compatible Device | iOS | - |
| Notification | Yes | - |
| Battery Type | Lithium Ion | - |
| Battery Life | 36 Hours | Upto 4 days |
| Rechargeable Battery | Yes | Yes |
| Charger Type | - | Wireless Charging |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Yes | Yes |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| Call Features | International Emergency Calling | - |
| Other Connectivity Features | Emergency SOS | NFC |
| Bluetooth Version | - | 4.2 |
| platform and storage features |
| Operating System | watchOS 10 | Tizen 4.0 |
| Compatible Operating System | iOS | - |
| Number of Cores | - | dual-core |
| Processor Name | S9 SiP | - |
| RAM | - | 1.5GB |
| camera and display features |
| Display Size | 49mm | 42mm |
| Display Type | OLED Retina | Super AMOLED |
| Backlight Display | Yes | - |
| Other Display Features | LTPO OLED Always-On Retina display | - |
| Display Resolution | - | 360 x 360 pixels |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | - |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | - |
| Compass | Yes | - |
| Calendar | Yes | - |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | English |
| Other Fitness Features | Blood Oxgen Sensor, ECG sensor | - |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| dimensions |
| Width | - | 42 |