Apple Watch Series 7 Aluminum vs Apple Watch Series 8

Phones Images
PHONES
Phone Names Apple Watch Series 7 Aluminum Apple Watch Series 8
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - InternationalHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
4G bands1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International1, 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, 2, 3, 4, 5, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Launch
Announced2021, September 142022, September 07
StatusAvailable. Released 2021, October 15Available. Released 2022, September 16
Body
BuildGlass front, ceramic/sapphire crystal back, aluminum frameSapphire crystal front, ceramic/sapphire crystal back, stainless steel frame
Dimensions45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
SIMeSIMeSIM
Weight32 g (41mm), 38.8 g (45mm) (1.13 oz)42.3 g (41mm), 51.5 g (45mm) (1.48 oz)
 IP6X certified 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
ProtectionIon-X strengthened glassSapphire crystal glass
Resolution484 x 396 pixels (~326 ppi density)484 x 396 pixels (~326 ppi density)
Size1.9 inches1.9 inches
TypeRetina LTPO OLED, 1000 nits (peak)Retina LTPO OLED, 1000 nits (peak)
 Always-on displayAlways-on display
Platform
CPUDual-coreDual-core
ChipsetApple S7Apple S8
GPUPowerVRPowerVR
OSwatchOS 8.0, upgradable to watchOS 26.1watchOS 9.0, upgradable to watchOS 26.1
Memory
Card slotNoNo
Internal32GB 1GB RAM32GB 1GB RAM
 eMMC 5.1eMMC 5.1
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.3, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, GALILEO, QZSS, BDSGPS, GLONASS, GALILEO, QZSS, BDS
RadioNoNo
USBNoNo
WLANWi-Fi 802.11 b/g/n, dual-bandWi-Fi 802.11 b/g/n, dual-band
Features
SensorsAccelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2maxAccelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
 Natural language commands and dictation (talking mode) Ultra Wideband (UWB) supportTemperature sensing (0.01˚ accuracy) Natural language commands and dictation (talking mode) Ultra Wideband (UWB) support
Battery
ChargingWireless, 0-80% in 45 minWireless, 0-80% in 45 min
TypeLi-Ion 309 mAh (1.19 Wh)Li-Ion 308 mAh
Misc
ColorsStarlight, Midnight, Blue, Green, RedGraphite, Silver, Gold
ModelsA2473, A2474, A2475, A2476, A2477, A2478, watch6,6, watch6,7, watch6,8, watch6,9A2773, A2775, A2772, A2774, A2857, A2858, watch6,16, watch6,17
PriceAbout 500 EURAbout 330 EUR
SAR1.10 W/kg (head)0.31 W/kg (head)     0.55 W/kg (body)
SAR EU0.70 W/kg (head)     1.50 W/kg (body)0.31 W/kg (head)     0.55 W/kg (body)
Camera
 NoNo