Apple Watch Series 8 (41mm) vs Apple Watch Series 4 (44mm)
            Apple Watch Series 8
            (41mm)
                $399
            
        
    
            Apple Watch Series 4
            (44mm)
                $429
            
        
    | Base Price (MSRP) $399 | Base Price (MSRP) $429 | 
| CPU S8  | CPU S4  | 
| GPU S8  | GPU S4  | 
| Memory 1GB  | Memory 1GB  | 
| Storage 32GB  | Storage 16GB  | 
| Display 1.7" LTPO OLED 430×352 Touch  | Display 1.8" LTPO OLED 448×368 Touch  | 
| N/A 0% 173 GFLOPS FP32 0% | N/A 0% 144 GFLOPS FP32 0% | 
| 1GB | 1GB | 
| Unknown # Tabs 0% | Unknown # Tabs 0% | 
| 32GB - | 16GB - | 
| Unknown # min 4K Video 0% | Unknown # min 4K Video 0% | 
| No Optical Drive | No Optical Drive | 
| - | - | 
| 1.7" LTPO OLED - Always On | 1.8" LTPO OLED - - | 
|  |  | 
| Area 1.4 in² (9 cm²) null Aspect Ratio | Area 1.6 in² (10 cm²) null Aspect Ratio | 
| Brightness - 1,000 Nits Peak | Brightness - 1,000 Nits Peak | 
| Refresh Rate 60Hz Variable - - | Refresh Rate 60Hz Variable - - | 
| - - | - - | 
| - - | - - | 
| Resolution 430×352 0.2 Million Pixels 329 PPI | Resolution 448×368 0.2 Million Pixels 326 PPI | 
|  |  | 
| - - 1,000,000:1 Contrast | - - 1,000,000:1 Contrast | 
| Viewing Angles 178° Horizontal 178° Vertical | Viewing Angles 178° Horizontal 178° Vertical | 
| Colour Depth 8-bit | Colour Depth 8-bit | 
| - - - - | - - - - | 
| - - - - - - | - - - - - - | 
| - - Fully Laminated | - - Fully Laminated | 
| Touch Capacitive | Touch Capacitive | 
| No Cameras - - - - - - - | No Cameras - - - - - - - | 
| - - - - - - - - - | - - - - - - - - - | 
| - - - - - - - - | - - - - - - - - | 
| - - - - - - - - | - - - - - - - - | 
| - - - - - - - | - - - - - - - | 
| - - - - - - - - | - - - - - - - - | 
| - - - - - - - - | - - - - - - - - | 
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| - - - - - | - - - - - | 
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| - - - - - - - - - - - - - - | - - - - - - - - - - - - - - | 
| - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - | 
| Not Included | Not Included | 
| Not Included | Not Included | 
| Not Included | Not Included | 
| Not Included | Not Included | 
| No Biometrics | No Biometrics | 
| 1 | 1 | 
| 1 | 1 | 
| No Cellular Cellular | No Cellular Cellular | 
|  |  | 
|  |  | 
| Wi-Fi 4E (802.11n) 1 Stream Up to 150Mbps | Wi-Fi 4 (802.11n) 1 Stream Up to 72Mbps | 
| Bluetooth 5.3 | Bluetooth 5.0 | 
| Motion Accelerometer Gyroscope Altimeter - | Motion Accelerometer Gyroscope Altimeter - | 
| Health Optical Heart (PPG) Electrical Heart (ECG) Blood Oxygen (SpO2) - Skin Temperature | Health Optical Heart (PPG) Electrical Heart (ECG) - - - | 
| Utility Proximity Ambient Light (ALS) - - - - Crash Detection - | Utility Proximity Ambient Light (ALS) - - - - - - | 
| Communication NFC - Ultra-Wideband Chip | Communication NFC - - | 
| Location GPS - GLONASS Galileo QZSS Beidou - Compass | Location GPS - GLONASS Galileo QZSS Beidou - - | 
| Integrated Chipset | Integrated Chipset | 
| No Ports - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | No Ports - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | 
| - - - - - - - - | - - - - - - - - | 
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | 
| - - - | - - - | 
| - - - | - - - | 
| - - | - - | 
| - - - | - - - | 
| - | - | 
| External | External | 
| Not Included - - | Not Included - - | 
| - - - - - - - - - | - - - - - - - - - | 
| - - - - - | - - - - - | 
| 1.1Wh 282mAh 3.85V Lithium-Ion - | 1.1Wh 292mAh 3.87V Lithium-Ion - | 
| Up to 18 Hours | Up to 18 Hours | 
| Charge Time - - 45 min 80% - | - - - - - | 
| watchOS | watchOS | 
| Build Material Aluminum, Glass IP6X Up to 50m Water Resistant | Build Material Aluminum, Glass - Up to 50m Water Resistant | 
| - - - - | - - - - | 
| Proprietary Wireless Charging - - | Proprietary Wireless Charging - - | 
| - - - - | - - - - | 
| Height 41 mm (1.6 in) Width 35 mm (1.4 in) Depth 10.7 mm (0.4 in) Volume 0.015 L | Height 44 mm (1.7 in) Width 38 mm (1.5 in) Depth 10.7 mm (0.4 in) Volume 0.018 L | 
| Weight 32 g (1.13 oz) - - - - | Weight 37 g (1.31 oz) - - - - | 
| CPU Not Upgradable | CPU Not Upgradable | 
| GPU Not Upgradable | GPU Not Upgradable | 
| Memory Not Upgradable | Memory Not Upgradable | 
| Storage Not Upgradable | Storage Not Upgradable | 
| Wi-Fi Not Upgradable | Wi-Fi Not Upgradable | 
| Motherboard Not Upgradable | Motherboard Not Upgradable | 
| Power Supply Not Upgradable | Power Supply Not Upgradable | 
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | 
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