
| Release | December, 2016 |
| Device Name | Apple Watch Series 1 42mm, Apple Watch Series 1 Aluminum 42mm |
| Device Type | Smartwatch |
| Device Model | A1803 |
| Box Items | Apple Watch, Magnetic charging cable, USB power adapter, Band, Quick start guide |
| Predecessor | Apple Watch 42mm 1st Gen |
| Successor | Apple Watch Series 2 |
| Shape | Rectangle |
| Case Dimensions | 42.5 x 36.4 x 10.5 mm (1.67 x 1.43 x 0.41 in) |
| Case/Bezel | Aluminum Case, Composite back |
| Strap Material | Various |
| Weight | 30 g body (1.06 oz) |
| IP Rating | IPX7 |
| Water Resistance | Water resistant up to 1 meter and 30 minutes |
| Colors | Space gray, gold, rose gold, or silver aluminum |
| Type | AMOLED |
| Screen Size | 1.5 inches |
| Screen Resolution | 390 x 312 pixels |
| Pixel Density | 303 ppi |
| Multi Touch | Yes |
| Screen Protection | Ion-X strengthened glass |
| Operating System | watchOS 3.0 |
| Chipset | Apple S1P |
| CPU | Cortex-A7, Dual-core 520 MHz |
| GPU | PowerVR G6200 |
| RAM | 512MB |
| Internal Memory | 8GB |
| SD Card Slot | No |
| Technology | No |
| Bands | No |
| SIM | No |
| Speed | No |
| Distance | Yes |
| Heart Rate | Yes |
| Steps | Yes |
| Bluetooth | 4.0, LE |
| GPS | No |
| WiFi | Wi-Fi 802.11 b/g/n |
| NFC | Yes |
| USB | No |
| Radio | No |
| Touch | Yes |
| Watchface | Customizable |
| Voice Command | Yes |
| Personal Assistant | Apple Siri |
| Smartphone Compatibility | iPhone 5+ |
| Smartphone Companion App | Apple Watch App |
| Activity Alert | Yes |
| SMS | Yes |
| Yes | |
| Incoming Call Alert | Yes |
| Calendar Reminder | Yes |
| Weather Forecast | Yes |
| Accelerometer | Yes |
| Gyro | Yes |
| Heart Rate | Yes |
| Light | - |
| Compass/Magnetometer | - |
| Vibration/Haptics engine | Yes |
| Other Sensors | - |
| Speaker | Yes |
| Microphone | Yes |
| Capacity | 250 mAh |
| Battery Life | Up to 18 h |
| Standby | - |
| Talk-Time | - |
| Wireless Charging | - |
| Charging Time | - |
| Quick Charging | - |
| Language | - |
| App Store | Apple Watch Store |
| Builtin Payment Service | Apple Pay |
| Bluetooth Music | Yes |
| Other Features | - |