| Release | September, 2018 |
| Device Name | Apple Watch Series 4 44mm |
| Device Type | Smartwatch |
| Ideal for (Gender) | Both Men & Women |
| Device Model | A1975, A1976 (NA); A2007, A2008 (EU, APAC, CN) |
| Box Items | Apple Watch Series 4, Band, Magnetic Charging Cable, 5W USB Power Adapter |
| Predecessor | Apple Watch Series 3 |
| Successor | Apple Watch Series 5 |
| Shape | Rectangle |
| Case Dimensions | 44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in) |
| Case/Bezel | Stainless Steel |
| Strap Material | Nylon, Fluoroelastomer Rubber, Stainless Steel |
| Strap/Band Size | - |
| Replaceable Band | Yes |
| Weight | 48 g (1.69 oz) |
| IP Rating | - |
| Water Resistance | 5 ATM, 50 meters |
| Colors | Space Black, Gold, Silver |
| Type | LTPO OLED |
| Screen Size | 1.78 inches, 10.0 cm2 |
| Screen Resolution | 448 x 368 pixels |
| Pixel Density | ~326 ppi |
| Multi Touch | Yes |
| Screen Protection | Sapphire crystal glass |
| Operating System | watchOS 5.0 |
| Chipset | Apple S4 |
| CPU | Dual-core |
| GPU | PowerVR |
| RAM | - |
| Internal Memory | 16GB |
| SD Card Slot | No |
| Technology | GSM / HSPA / LTE |
| Bands | 2G Bands: GSM 3G Bands: HSDPA 4G Bands: LTE |
| SIM | Apple e-SIM |
| Speed | HSPA, LTE |
| Distance | Yes |
| Heart Rate | Yes |
| Steps | Yes |
| Calories Consumption | Yes |
| Sleep | Yes |
| Bluetooth | 5.0, A2DP, LE |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, QZSS |
| WiFi | Wi-Fi 802.11 b/g/n 2.4GHz |
| NFC | Yes |
| USB | No |
| Radio | No |
| Touch | 3D Touch |
| Watchface | Customizable |
| Voice Command | Yes |
| Personal Assistant | Siri |
| Smartphone Compatibility | iPhone 6 or later with iOS 12 or above |
| Smartphone Companion App | Apple Watch |
| Activity Alert | Yes |
| SMS | Yes |
| Yes | |
| Incoming Call Alert | Yes |
| Calendar Reminder | Yes |
| Weather Forecast | Yes |
| Accelerometer | Yes |
| Gyro | Yes |
| Heart Rate | Yes |
| Light | Yes |
| Compass/Magnetometer | Yes |
| Vibration/Haptics engine | Yes |
| Other Sensors | Fall detection, Barometric altimeter |
| Speaker | Yes |
| Microphone | Yes |
| Battery Type | Lithium-Ion |
| Capacity | - |
| Battery Life | Up to 18 H |
| Standby | - |
| Talk-Time | - |
| Wireless Charging | 5W Magnetic charging |
| Charging Time | - |
| Quick Charging | - |
| Language | Multilingual |
| App Store | Apple store |
| Builtin Payment Service | Apple Pay |
| Bluetooth Music | Yes |