Screen size
equal specsWatch Series 11 Aluminum2.0"
Watch Series 12 Aluminum2.0"
Quick verdict
Watch Series 11 Aluminum leads the measured specs 2-1.
Measured wins
Watch Series 11 Aluminum
2
spec wins
Overall winner
Ties
10
equal specs
Watch Series 12 Aluminum
1
spec wins
Screen size
equal specsResolution
equal specsRefresh rate
Peak brightness
equal specsPixel density
equal specsCPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Technology
Watch Series 11 Aluminum
GSM / HSPA / LTE / 5G
Watch Series 12 Aluminum
GSM / HSPA / LTE / 5G
2G bands
Watch Series 11 Aluminum
GSM 850 / 900 / 1800 / 1900
Watch Series 12 Aluminum
GSM 850 / 900 / 1800 / 1900
3G bands
Watch Series 11 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK, HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
Watch Series 12 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Watch Series 11 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 12 Aluminum
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71
5G bands
Watch Series 11 Aluminum
SA/NSA
Watch Series 12 Aluminum
1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 38, 40, 41, 66, 71 SA/NSA
Speed
Watch Series 11 Aluminum
HSPA, LTE, 5G
Watch Series 12 Aluminum
HSPA, LTE, 5G
Announced
Watch Series 11 Aluminum
2025, September 09
Watch Series 12 Aluminum
2026, September 09
Status
Watch Series 11 Aluminum
Available. Released 2025, September 19
Watch Series 12 Aluminum
Available. Released 2026, September 18
Dimensions
Watch Series 11 Aluminum
46 x 39 x 9.7 mm (1.81 x 1.54 x 0.38 in)
Watch Series 12 Aluminum
46 x 40 x 9.7 mm (1.81 x 1.57 x 0.38 in)
Weight
Watch Series 11 Aluminum
29.7 g (42mm), 36.9 g (46mm) (1.06 oz)
Watch Series 12 Aluminum
31.5/32.2/38.6/39.5 g (1.13 oz)
Build
Watch Series 11 Aluminum
Glass front, ceramic/sapphire crystal back, aluminum frame
Watch Series 12 Aluminum
Glass front (Ceramic Shield 2), zirconia back, aluminum case
SIM
Watch Series 11 Aluminum
eSIM
Watch Series 12 Aluminum
eSIM
Other
Watch Series 11 Aluminum
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models) Depth gauge to 6m
Watch Series 12 Aluminum
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models) Depth gauge to 6m
Type
Watch Series 11 Aluminum
Retina LTPO3 OLED, 2000 nits (peak)
Watch Series 12 Aluminum
Retina LTPO3 OLED, 2000 nits (peak)
Size
Watch Series 11 Aluminum
1.96 inches
Watch Series 12 Aluminum
1.96 inches
Resolution
Watch Series 11 Aluminum
496 x 416 pixels (~330 ppi density)
Watch Series 12 Aluminum
496 x 416 pixels (~326 ppi density)
Protection
Watch Series 11 Aluminum
Ion-X strengthened glass (2025 gen)
Watch Series 12 Aluminum
Ceramic Shield 2
Other
Watch Series 11 Aluminum
Wide-angle OLED
Watch Series 12 Aluminum
Wide-angle OLED
OS
Watch Series 11 Aluminum
watchOS 26, upgradable to watchOS 26.2.1
Watch Series 12 Aluminum
watchOS 27
Chipset
Watch Series 11 Aluminum
Apple S10
Watch Series 12 Aluminum
Apple S11
CPU
Watch Series 11 Aluminum
Dual-core
Watch Series 12 Aluminum
Dual-core
GPU
Watch Series 11 Aluminum
PowerVR
Watch Series 12 Aluminum
PowerVR
Card slot
Watch Series 11 Aluminum
No
Watch Series 12 Aluminum
No
Internal
Watch Series 11 Aluminum
64GB
Watch Series 12 Aluminum
64GB
Other
Watch Series 11 Aluminum
No
Watch Series 12 Aluminum
No
Loudspeaker
Watch Series 11 Aluminum
Yes
Watch Series 12 Aluminum
Yes
3.5mm jack
Watch Series 11 Aluminum
No
Watch Series 12 Aluminum
No
WLAN
Watch Series 11 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Watch Series 12 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
Watch Series 11 Aluminum
5.3, A2DP, LE
Watch Series 12 Aluminum
5.3, A2DP, LE
Positioning
Watch Series 11 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
Watch Series 12 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
NFC
Watch Series 11 Aluminum
Yes
Watch Series 12 Aluminum
Yes
Radio
Watch Series 11 Aluminum
No
Watch Series 12 Aluminum
No
USB
Watch Series 11 Aluminum
No
Watch Series 12 Aluminum
No
Sensors
Watch Series 11 Aluminum
Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Watch Series 12 Aluminum
Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Other
Watch Series 11 Aluminum
Temperature sensing (0.01˚ accuracy) Ultra Wideband (UWB) support (gen2 chip) Media playback
Watch Series 12 Aluminum
Health Sensing System: third‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor, temperature sensor Temperature sensing (0.01˚ accuracy) Ultra Wideband (UWB) support (gen2 chip) Media playback
Type
Watch Series 11 Aluminum
Li-Ion
Watch Series 12 Aluminum
Li-Ion
Charging
Watch Series 11 Aluminum
Wireless, 0-80% in 30 min
Watch Series 12 Aluminum
Wireless, 0-80% in 30 min
Colors
Watch Series 11 Aluminum
Jet Black, Space Gray, Rose Gold, Silver
Watch Series 12 Aluminum
Dark Bronze, Light Gold, Black, Space Gray
Models
Watch Series 11 Aluminum
A3333, A3331, A3335, A3337, A3450, A3451, A3452, A3453
Watch Series 12 Aluminum
A3582, A3587
SAR
Watch Series 11 Aluminum
0.42 W/kg (head)
Watch Series 12 Aluminum
-
SAR EU
Watch Series 11 Aluminum
0.11 W/kg (head)
Watch Series 12 Aluminum
-
Price
Watch Series 11 Aluminum
€ 379.00
Watch Series 12 Aluminum
€ 439.00