Screen size
Watch Series 10 AluminumWinner: 2.0"+9.2%
Watch Series 4 Aluminum1.8"
Quick verdict
Watch Series 10 Aluminum leads the measured specs 9-1.
Measured wins
Watch Series 10 Aluminum
9
spec wins
Overall winner
Ties
4
equal specs
Watch Series 4 Aluminum
1
spec wins
Screen size
Technology
Watch Series 10 Aluminum
GSM / HSPA / LTE
Watch Series 4 Aluminum
GSM / HSPA / LTE
2G bands
Watch Series 10 Aluminum
GSM 850 / 900 / 1800 / 1900
Watch Series 4 Aluminum
GSM 850 / 900 / 1800 / 1900
3G bands
Watch Series 10 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK, HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
Watch Series 4 Aluminum
HSDPA 850 / 900 / 2100 / 800 - Europe, Australia, HSDPA 850 / 1700(AWS) / 1900 / 800 - USA, LATAM, Canada, HSDPA 2100 - China
4G bands
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Watch Series 10 Aluminum
1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK, 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Watch Series 4 Aluminum
1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia, 2, 4, 5, 12, 13, 17, 18, 19, 25, 26, 41 - USA, LATAM, Canada, 1, 3, 39, 40, 41 - China
Speed
Watch Series 10 Aluminum
HSPA, LTE
Watch Series 4 Aluminum
HSPA, LTE
Announced
Watch Series 10 Aluminum
2024, September 09
Watch Series 4 Aluminum
2018, September. Released 2018, September
Status
Watch Series 10 Aluminum
Available. Released 2024, September 20
Watch Series 4 Aluminum
Discontinued
Dimensions
Watch Series 10 Aluminum
46 x 39 x 9.7 mm (1.81 x 1.54 x 0.38 in)
Watch Series 4 Aluminum
44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)
Weight
Watch Series 10 Aluminum
29.3 g (42mm), 35.3 g (46mm) (1.02 oz)
Watch Series 4 Aluminum
36.7 g (1.31 oz)
Build
Watch Series 10 Aluminum
Glass front, ceramic/sapphire crystal back, aluminum frame
Watch Series 4 Aluminum
Glass front, ceramic/sapphire crystal back, aluminum frame
SIM
Watch Series 10 Aluminum
eSIM
Watch Series 4 Aluminum
eSIM
Other
Watch Series 10 Aluminum
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models) Depth gauge to 6m
Watch Series 4 Aluminum
50m water resistant ECG certified (region dependent SW application; HW available on all models)
Type
Watch Series 10 Aluminum
Retina LTPO3 OLED, 2000 nits (peak)
Watch Series 4 Aluminum
Retina LTPO OLED, 1000 nits (peak)
Size
Watch Series 10 Aluminum
1.96 inches
Watch Series 4 Aluminum
1.78 inches
Resolution
Watch Series 10 Aluminum
496 x 416 pixels (~330 ppi density)
Watch Series 4 Aluminum
448 x 368 pixels (~326 ppi density)
Protection
Watch Series 10 Aluminum
Ion-X strengthened glass
Watch Series 4 Aluminum
Ion-X strengthened glass
Other
Watch Series 10 Aluminum
Wide-angle OLED
Watch Series 4 Aluminum
3D Touch display
OS
Watch Series 10 Aluminum
watchOS 11, upgradable to watchOS 26.2.1
Watch Series 4 Aluminum
watchOS 5.0, upgradable to watchOS 10.6.1
Chipset
Watch Series 10 Aluminum
Apple S10
Watch Series 4 Aluminum
Apple S4
CPU
Watch Series 10 Aluminum
Dual-core
Watch Series 4 Aluminum
Dual-core
GPU
Watch Series 10 Aluminum
PowerVR
Watch Series 4 Aluminum
PowerVR
Card slot
Watch Series 10 Aluminum
No
Watch Series 4 Aluminum
No
Internal
Watch Series 10 Aluminum
64GB
Watch Series 4 Aluminum
16GB 1GB RAM
Other
Watch Series 10 Aluminum
No
Watch Series 4 Aluminum
No
Loudspeaker
Watch Series 10 Aluminum
Yes
Watch Series 4 Aluminum
Yes
3.5mm jack
Watch Series 10 Aluminum
No
Watch Series 4 Aluminum
No
WLAN
Watch Series 10 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Watch Series 4 Aluminum
Wi-Fi 802.11 b/g/n
Bluetooth
Watch Series 10 Aluminum
5.3, A2DP, LE
Watch Series 4 Aluminum
5.0, A2DP, LE
Positioning
Watch Series 10 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
Watch Series 4 Aluminum
GPS, GLONASS, GALILEO, QZSS
NFC
Watch Series 10 Aluminum
Yes
Watch Series 4 Aluminum
Yes
Radio
Watch Series 10 Aluminum
No
Watch Series 4 Aluminum
No
USB
Watch Series 10 Aluminum
No
Watch Series 4 Aluminum
No
Sensors
Watch Series 10 Aluminum
Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Watch Series 4 Aluminum
Accelerometer, gyro, heart rate, barometer
Other
Watch Series 10 Aluminum
Temperature sensing (0.01˚ accuracy) Ultra Wideband (UWB) support (gen2 chip) Media playback
Watch Series 4 Aluminum
Natural language commands and dictation (talking mode)
Type
Watch Series 10 Aluminum
Li-Ion 327 mAh
Watch Series 4 Aluminum
Li-Ion 292 mAh (1.12 Wh), non-removable
Charging
Watch Series 10 Aluminum
Wireless, 0-80% in 30 min
Watch Series 4 Aluminum
Wireless
Colors
Watch Series 10 Aluminum
Jet Black, Rose Gold, Silver
Watch Series 4 Aluminum
Silver, Gold, Space Gray
Models
Watch Series 10 Aluminum
A3001, A3002, A3003, A3206, A2997, A2998, A2999, A3000
Watch Series 4 Aluminum
A1975, A1976, A2007, A2008, A1977, A1978
SAR
Watch Series 10 Aluminum
1.08 W/kg (head)
Watch Series 4 Aluminum
-
SAR EU
Watch Series 10 Aluminum
0.26 W/kg (head) 0.83 W/kg (body)
Watch Series 4 Aluminum
-
Price
Watch Series 10 Aluminum
€ 319.49
Watch Series 4 Aluminum
About 430 EUR