Screen size
Watch Series 1 Aluminum 42mm1.7"
Watch Series 12Winner: 2.0"+16%
Quick verdict
Watch Series 12 leads the measured specs 9-2.
Measured wins
Watch Series 1 Aluminum 42mm
2
spec wins
Ties
3
equal specs
Watch Series 12
9
spec wins
Overall winner
Screen size
Technology
Watch Series 1 Aluminum 42mm
No cellular connectivity
Watch Series 12
GSM / HSPA / LTE / 5G
2G bands
Watch Series 1 Aluminum 42mm
N/A
Watch Series 12
GSM 850 / 900 / 1800 / 1900
GPRS
Watch Series 1 Aluminum 42mm
No
Watch Series 12
-
EDGE
Watch Series 1 Aluminum 42mm
No
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 12
-
3G bands
Watch Series 1 Aluminum 42mm
-
Watch Series 12
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Watch Series 1 Aluminum 42mm
-
Watch Series 12
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 1 Aluminum 42mm
-
Watch Series 12
1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 38, 40, 41, 66, 71 SA/NSA
Speed
Watch Series 1 Aluminum 42mm
-
Watch Series 12
HSPA, LTE, 5G
Announced
Watch Series 1 Aluminum 42mm
2016, September. Released 2016, December
Watch Series 12
2026, September 09
Status
Watch Series 1 Aluminum 42mm
Discontinued
Watch Series 12
Available. Released 2026, September 18
Dimensions
Watch Series 1 Aluminum 42mm
42.5 x 36.4 x 10.5 mm (1.67 x 1.43 x 0.41 in)
Watch Series 12
46 x 40 x 9.7 mm - titanium47 x 41 x 9.9 mm - ceramic
Weight
Watch Series 1 Aluminum 42mm
30 g body (1.06 oz)
Watch Series 12
36.5/41.7/42.8/44.9/51.3/52.9 g (1.31 oz)
Build
Watch Series 1 Aluminum 42mm
Glass front, composite plastic back, aluminum frame
Watch Series 12
Sapphire crystal front, zirconia back, titanium case (grade 5) or ceramic case
SIM
Watch Series 1 Aluminum 42mm
No
Watch Series 12
eSIM
Other
Watch Series 1 Aluminum 42mm
IPX7 water resistant up to 1 meter and 30 minutes
Watch Series 12
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models) Depth gauge to 6m
Type
Watch Series 1 Aluminum 42mm
Retina OLED, 450 nits (peak)
Watch Series 12
Retina LTPO3 OLED, 2000 nits (peak)
Size
Watch Series 1 Aluminum 42mm
1.65 inches
Watch Series 12
1.96 inches
Resolution
Watch Series 1 Aluminum 42mm
390 x 312 pixels (~303 ppi density)
Watch Series 12
496 x 416 pixels (~326 ppi density)
Protection
Watch Series 1 Aluminum 42mm
Ion-X strengthened glass
Watch Series 12
Sapphire crystal
Other
Watch Series 1 Aluminum 42mm
3D Touch display
Watch Series 12
Wide-angle OLED
OS
Watch Series 1 Aluminum 42mm
watchOS 3.0, upgradable to watchOS 6.2.8
Watch Series 12
watchOS 27
Chipset
Watch Series 1 Aluminum 42mm
Apple S1P (28 nm)
Watch Series 12
Apple S11
CPU
Watch Series 1 Aluminum 42mm
Dual-core 520 MHz Cortex-A7
Watch Series 12
Dual-core
GPU
Watch Series 1 Aluminum 42mm
PowerVR G6200
Watch Series 12
PowerVR
Card slot
Watch Series 1 Aluminum 42mm
No
Watch Series 12
No
Internal
Watch Series 1 Aluminum 42mm
8GB 512MB RAM
Watch Series 12
64GB
Other
Watch Series 1 Aluminum 42mm
No
Watch Series 12
No
Loudspeaker
Watch Series 1 Aluminum 42mm
Yes
Watch Series 12
Yes
3.5mm jack
Watch Series 1 Aluminum 42mm
No
Watch Series 12
No
WLAN
Watch Series 1 Aluminum 42mm
Wi-Fi 802.11 b/g/n
Watch Series 12
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
Watch Series 1 Aluminum 42mm
4.0, LE
Watch Series 12
5.3, A2DP, LE
Positioning
Watch Series 1 Aluminum 42mm
No
Watch Series 12
GPS, GLONASS, GALILEO, QZSS, BDS
NFC
Watch Series 1 Aluminum 42mm
Yes
Watch Series 12
Yes
Radio
Watch Series 1 Aluminum 42mm
No
Watch Series 12
No
USB
Watch Series 1 Aluminum 42mm
No
Watch Series 12
No
Sensors
Watch Series 1 Aluminum 42mm
Accelerometer, gyro, heart rate
Watch Series 12
Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Other
Watch Series 1 Aluminum 42mm
Natural language commands and dictation
Watch Series 12
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 1 Aluminum 42mm
Li-Ion 250 mAh (0.94 Wh), non-removable
Watch Series 12
Li-Ion
Charging
Watch Series 1 Aluminum 42mm
Wireless
Watch Series 12
Wireless, 0-80% in 30 min
Colors
Watch Series 1 Aluminum 42mm
Case colors: silver, gold, rose gold, gray Band colors: brown, white, black, blue Band types: sport
Watch Series 12
Radiant Gold Titanium, Natural Titanium, Silver Titanium (Hermès only), Pearl White Ceramic, Night Blue Ceramic
Models
Watch Series 1 Aluminum 42mm
A1803
Watch Series 12
A3582, A3587
Price
Watch Series 1 Aluminum 42mm
About 300 EUR
Watch Series 12
€ 439.00