Screen size
Watch Series 12 AluminumWinner: 2.0"+23%
Watch Sport 38mm (1st gen)1.5"
Quick verdict
Watch Series 12 Aluminum leads the measured specs 9-2.
Measured wins
Watch Series 12 Aluminum
9
spec wins
Overall winner
Ties
3
equal specs
Watch Sport 38mm (1st gen)
2
spec wins
Screen size
Technology
Watch Series 12 Aluminum
GSM / HSPA / LTE / 5G
Watch Sport 38mm (1st gen)
No cellular connectivity
2G bands
Watch Series 12 Aluminum
GSM 850 / 900 / 1800 / 1900
Watch Sport 38mm (1st gen)
N/A
3G bands
Watch Series 12 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Watch Sport 38mm (1st gen)
-
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 Sport 38mm (1st gen)
-
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 Sport 38mm (1st gen)
-
Speed
Watch Series 12 Aluminum
HSPA, LTE, 5G
Watch Sport 38mm (1st gen)
-
GPRS
Watch Series 12 Aluminum
-
Watch Sport 38mm (1st gen)
No
EDGE
Watch Series 12 Aluminum
-
Watch Sport 38mm (1st gen)
No
Announced
Watch Series 12 Aluminum
2026, September 09
Watch Sport 38mm (1st gen)
2014, September. Released 2015, April
Status
Watch Series 12 Aluminum
Available. Released 2026, September 18
Watch Sport 38mm (1st gen)
Discontinued
Dimensions
Watch Series 12 Aluminum
46 x 40 x 9.7 mm (1.81 x 1.57 x 0.38 in)
Watch Sport 38mm (1st gen)
38.6 x 33.3 x 10.5 mm (1.52 x 1.31 x 0.41 in)
Weight
Watch Series 12 Aluminum
31.5/32.2/38.6/39.5 g (1.13 oz)
Watch Sport 38mm (1st gen)
25 g body (2.19 oz)
Build
Watch Series 12 Aluminum
Glass front (Ceramic Shield 2), zirconia back, aluminum case
Watch Sport 38mm (1st gen)
Glass front, composite plastic back, aluminum frame
SIM
Watch Series 12 Aluminum
eSIM
Watch Sport 38mm (1st gen)
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 Sport 38mm (1st gen)
IPX7 water resistant up to 1 meter and 30 minutes
Type
Watch Series 12 Aluminum
Retina LTPO3 OLED, 2000 nits (peak)
Watch Sport 38mm (1st gen)
Retina OLED, 450 nits (peak)
Size
Watch Series 12 Aluminum
1.96 inches
Watch Sport 38mm (1st gen)
1.5 inches
Resolution
Watch Series 12 Aluminum
496 x 416 pixels (~326 ppi density)
Watch Sport 38mm (1st gen)
340 x 272 pixels (~290 ppi density)
Protection
Watch Series 12 Aluminum
Ceramic Shield 2
Watch Sport 38mm (1st gen)
Ion-X strengthened glass
Other
Watch Series 12 Aluminum
Wide-angle OLED
Watch Sport 38mm (1st gen)
3D Touch display
OS
Watch Series 12 Aluminum
watchOS 27
Watch Sport 38mm (1st gen)
watchOS 1.0, upgradable to watchOS 4.3.2
Chipset
Watch Series 12 Aluminum
Apple S11
Watch Sport 38mm (1st gen)
Apple S1 (28 nm)
CPU
Watch Series 12 Aluminum
Dual-core
Watch Sport 38mm (1st gen)
520 MHz Cortex-A7
GPU
Watch Series 12 Aluminum
PowerVR
Watch Sport 38mm (1st gen)
PowerVR SGX543
Card slot
Watch Series 12 Aluminum
No
Watch Sport 38mm (1st gen)
No
Internal
Watch Series 12 Aluminum
64GB
Watch Sport 38mm (1st gen)
8GB 512MB RAM
Other
Watch Series 12 Aluminum
No
Watch Sport 38mm (1st gen)
No
Loudspeaker
Watch Series 12 Aluminum
Yes
Watch Sport 38mm (1st gen)
Yes
3.5mm jack
Watch Series 12 Aluminum
No
Watch Sport 38mm (1st gen)
No
WLAN
Watch Series 12 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Watch Sport 38mm (1st gen)
Wi-Fi 802.11 b/g/n
Bluetooth
Watch Series 12 Aluminum
5.3, A2DP, LE
Watch Sport 38mm (1st gen)
4.0, LE
Positioning
Watch Series 12 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
Watch Sport 38mm (1st gen)
No
NFC
Watch Series 12 Aluminum
Yes
Watch Sport 38mm (1st gen)
Yes
Radio
Watch Series 12 Aluminum
No
Watch Sport 38mm (1st gen)
No
USB
Watch Series 12 Aluminum
No
Watch Sport 38mm (1st gen)
No
Sensors
Watch Series 12 Aluminum
Accelerometer, gyro, always-on heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Watch Sport 38mm (1st gen)
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 Sport 38mm (1st gen)
Natural language commands and dictation
Type
Watch Series 12 Aluminum
Li-Ion
Watch Sport 38mm (1st gen)
Li-Ion 205 mAh (0.78 Wh), non-removable
Charging
Watch Series 12 Aluminum
Wireless, 0-80% in 30 min
Watch Sport 38mm (1st gen)
Wireless
Colors
Watch Series 12 Aluminum
Dark Bronze, Light Gold, Black, Space Gray
Watch Sport 38mm (1st gen)
Silver/White, Orange, Blue; Gray/Black; Rose Gold/Lavender, Stone; Gold/White, Blue, Yellow, Apricot, Royal Blue, Pink/Royal Blue/Gold&Red/Black Woven Nylon
Models
Watch Series 12 Aluminum
A3582, A3587
Watch Sport 38mm (1st gen)
A1553
Price
Watch Series 12 Aluminum
€ 439.00
Watch Sport 38mm (1st gen)
About 250 EUR