Screen size
Watch Series 12 AluminumWinner: 2.0"+23%
Watch Series 2 38mm1.5"
Quick verdict
Watch Series 12 Aluminum leads the measured specs 10-1.
Measured wins
Watch Series 12 Aluminum
10
spec wins
Overall winner
Ties
3
equal specs
Watch Series 2 38mm
1
spec wins
Screen size
Technology
Watch Series 12 Aluminum
GSM / HSPA / LTE / 5G
Watch Series 2 38mm
No cellular connectivity
2G bands
Watch Series 12 Aluminum
GSM 850 / 900 / 1800 / 1900
Watch Series 2 38mm
N/A
3G bands
Watch Series 12 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Watch Series 2 38mm
-
4G bands
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
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
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Watch Series 2 38mm
-
5G bands
Watch Series 12 Aluminum
1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 38, 40, 41, 66, 71 SA/NSA
Watch Series 2 38mm
-
Speed
Watch Series 12 Aluminum
HSPA, LTE, 5G
Watch Series 2 38mm
-
GPRS
Watch Series 12 Aluminum
-
Watch Series 2 38mm
No
EDGE
Watch Series 12 Aluminum
-
Watch Series 2 38mm
No
Announced
Watch Series 12 Aluminum
2026, September 09
Watch Series 2 38mm
2016, September. Released 2016, December
Status
Watch Series 12 Aluminum
Available. Released 2026, September 18
Watch Series 2 38mm
Discontinued
Dimensions
Watch Series 12 Aluminum
46 x 40 x 9.7 mm (1.81 x 1.57 x 0.38 in)
Watch Series 2 38mm
38.6 x 33.3 x 11.4 mm (1.52 x 1.31 x 0.45 in)
Weight
Watch Series 12 Aluminum
31.5/32.2/38.6/39.5 g (1.13 oz)
Watch Series 2 38mm
41.9 g body (1.48 oz)
Build
Watch Series 12 Aluminum
Glass front (Ceramic Shield 2), zirconia back, aluminum case
Watch Series 2 38mm
Glass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frame
SIM
Watch Series 12 Aluminum
eSIM
Watch Series 2 38mm
No
Other
Watch Series 12 Aluminum
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models) Depth gauge to 6m
Watch Series 2 38mm
50m water resistant
Type
Watch Series 12 Aluminum
Retina LTPO3 OLED, 2000 nits (peak)
Watch Series 2 38mm
Retina OLED, 1000 nits (peak)
Size
Watch Series 12 Aluminum
1.96 inches
Watch Series 2 38mm
1.5 inches
Resolution
Watch Series 12 Aluminum
496 x 416 pixels (~326 ppi density)
Watch Series 2 38mm
340 x 272 pixels (~290 ppi density)
Protection
Watch Series 12 Aluminum
Ceramic Shield 2
Watch Series 2 38mm
Sapphire crystal glass
Other
Watch Series 12 Aluminum
Wide-angle OLED
Watch Series 2 38mm
3D Touch display
OS
Watch Series 12 Aluminum
watchOS 27
Watch Series 2 38mm
watchOS 3.0, upgradable to watchOS 6.2.8
Chipset
Watch Series 12 Aluminum
Apple S11
Watch Series 2 38mm
Apple S2 (16 nm)
CPU
Watch Series 12 Aluminum
Dual-core
Watch Series 2 38mm
Dual-core 780 MHz Cortex-A7
GPU
Watch Series 12 Aluminum
PowerVR
Watch Series 2 38mm
PowerVR G6200
Card slot
Watch Series 12 Aluminum
No
Watch Series 2 38mm
No
Internal
Watch Series 12 Aluminum
64GB
Watch Series 2 38mm
8GB 512MB RAM
Other
Watch Series 12 Aluminum
No
Watch Series 2 38mm
No
Loudspeaker
Watch Series 12 Aluminum
Yes
Watch Series 2 38mm
Yes
3.5mm jack
Watch Series 12 Aluminum
No
Watch Series 2 38mm
No
WLAN
Watch Series 12 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Watch Series 2 38mm
Wi-Fi 802.11 b/g/n
Bluetooth
Watch Series 12 Aluminum
5.3, A2DP, LE
Watch Series 2 38mm
4.0, A2DP
Positioning
Watch Series 12 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
Watch Series 2 38mm
GPS, GLONASS
NFC
Watch Series 12 Aluminum
Yes
Watch Series 2 38mm
Yes
Radio
Watch Series 12 Aluminum
No
Watch Series 2 38mm
No
USB
Watch Series 12 Aluminum
No
Watch Series 2 38mm
No
Sensors
Watch Series 12 Aluminum
Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Watch Series 2 38mm
Accelerometer, gyro, heart rate
Other
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
Watch Series 2 38mm
Natural language commands and dictation
Type
Watch Series 12 Aluminum
Li-Ion
Watch Series 2 38mm
Li-Ion 273 mAh (1.03 Wh), non-removable
Charging
Watch Series 12 Aluminum
Wireless, 0-80% in 30 min
Watch Series 2 38mm
Wireless
Colors
Watch Series 12 Aluminum
Dark Bronze, Light Gold, Black, Space Gray
Watch Series 2 38mm
Sport band: silver case/white, black case/blackLeather band: silver case/blue, brown, gray, red Stainless Steel band: silver case/silver, black case/black
Models
Watch Series 12 Aluminum
A3582, A3587
Watch Series 2 38mm
A1757
Price
Watch Series 12 Aluminum
€ 439.00
Watch Series 2 38mm
About 650 EUR