Apple Watch Series 4 vs Apple Watch Series 8

Phones Images
Apple Watch Series 4 Apple Watch Series 8
PHONES
Phone Names Apple Watch Series 4 Apple Watch Series 8
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 2100 / 800 - Europe, AustraliaHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
4G bands1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
 1, 3, 39, 40, 41 - China1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Launch
Announced2018, September. Released 2018, September2022, September 07
StatusDiscontinuedAvailable. Released 2022, September 16
Body
BuildGlass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frameSapphire crystal front, ceramic/sapphire crystal back, stainless steel frame
Dimensions44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
SIMeSIMeSIM
Weight48 g (1.69 oz)42.3 g (41mm), 51.5 g (45mm) (1.48 oz)
 50m water resistant ECG certified (region dependent SW application; HW available on all models)IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Display
ProtectionSapphire crystal glassSapphire crystal glass
Resolution448 x 368 pixels (~326 ppi density)484 x 396 pixels (~326 ppi density)
Size1.78 inches1.9 inches
TypeRetina LTPO OLED, 1000 nits (peak)Retina LTPO OLED, 1000 nits (peak)
 3D Touch displayAlways-on display
Platform
CPUDual-coreDual-core
ChipsetApple S4Apple S8
GPUPowerVRPowerVR
OSwatchOS 5.0, upgradable to watchOS 10.6.1watchOS 9.0, upgradable to watchOS 26.1
Memory
Card slotNoNo
Internal16GB 1GB RAM32GB 1GB RAM
 -eMMC 5.1
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.3, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, GALILEO, QZSSGPS, GLONASS, GALILEO, QZSS, BDS
RadioNoNo
USBNoNo
WLANWi-Fi 802.11 b/g/nWi-Fi 802.11 b/g/n, dual-band
Features
SensorsAccelerometer, gyro, heart rate, barometerAccelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
 Natural language commands and dictation (talking mode)Temperature sensing (0.01˚ accuracy) Natural language commands and dictation (talking mode) Ultra Wideband (UWB) support
Battery
ChargingWirelessWireless, 0-80% in 45 min
TypeLi-Ion 292 mAh (1.12 Wh), non-removableLi-Ion 308 mAh
Misc
ColorsSpace Black, Silver, GoldGraphite, Silver, Gold
ModelsA1975, A1976, A2007, A2008A2773, A2775, A2772, A2774, A2857, A2858, watch6,16, watch6,17
PriceAbout 700 EURAbout 330 EUR
SAR-0.31 W/kg (head)     0.55 W/kg (body)
SAR EU-0.31 W/kg (head)     0.55 W/kg (body)
Camera
 NoNo