Screen size
Watch Series 2 Aluminum 38mm1.5"
Watch Ultra 3Winner: 2.0"+24%
Quick verdict
Watch Ultra 3 leads the measured specs 8-2.
Measured wins
Watch Series 2 Aluminum 38mm
2
spec wins
Ties
3
equal specs
Watch Ultra 3
8
spec wins
Overall winner
Screen size
Technology
Watch Series 2 Aluminum 38mm
No cellular connectivity
Watch Ultra 3
GSM / HSPA / LTE / 5G
2G bands
Watch Series 2 Aluminum 38mm
N/A
Watch Ultra 3
GSM 850 / 900 / 1800 / 1900
GPRS
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
-
EDGE
Watch Series 2 Aluminum 38mm
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 Ultra 3
-
3G bands
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK, HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
4G bands
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
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
5G bands
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
SA/NSA
Speed
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
HSPA, LTE, 5G
Announced
Watch Series 2 Aluminum 38mm
2016, September. Released 2016, December
Watch Ultra 3
2025, September 09
Status
Watch Series 2 Aluminum 38mm
Discontinued
Watch Ultra 3
Available. Released 2025, September 19
Dimensions
Watch Series 2 Aluminum 38mm
38.6 x 33.3 x 11.4 mm (1.52 x 1.31 x 0.45 in)
Watch Ultra 3
49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in)
Weight
Watch Series 2 Aluminum 38mm
28.2 g body (0.99 oz)
Watch Ultra 3
61.6 g or 61.8 g (black) (2.15 oz)
Build
Watch Series 2 Aluminum 38mm
Glass front, ceramic back, aluminum frame
Watch Ultra 3
Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 5)
SIM
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
eSIM
Other
Watch Series 2 Aluminum 38mm
50m water resistant
Watch Ultra 3
IP6X certified 100m water resistant (22810:2010) 40m swimproof/diving (EN13319) MIL-STD-810H compliant ECG certified (region dependent SW application; HW available on all models)
Type
Watch Series 2 Aluminum 38mm
Retina OLED, 1000 nits (peak)
Watch Ultra 3
Retina LTPO3 OLED, 3000 nits (peak)
Size
Watch Series 2 Aluminum 38mm
1.5 inches
Watch Ultra 3
1.98 inches
Resolution
Watch Series 2 Aluminum 38mm
340 x 272 pixels (~290 ppi density)
Watch Ultra 3
514 x 422 pixels (~326 ppi density)
Protection
Watch Series 2 Aluminum 38mm
Ion-X strengthened glass
Watch Ultra 3
Sapphire crystal glass
Other
Watch Series 2 Aluminum 38mm
3D Touch display
Watch Ultra 3
Wide-angle OLED
OS
Watch Series 2 Aluminum 38mm
watchOS 3.0, upgradable to watchOS 6.2.8
Watch Ultra 3
watchOS 26, upgradable to watchOS 26.2.1
Chipset
Watch Series 2 Aluminum 38mm
Apple S2 (16 nm)
Watch Ultra 3
Apple S10
CPU
Watch Series 2 Aluminum 38mm
Dual-core 780 MHz Cortex-A7
Watch Ultra 3
Dual-core
GPU
Watch Series 2 Aluminum 38mm
PowerVR G6200
Watch Ultra 3
PowerVR
Card slot
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
No
Internal
Watch Series 2 Aluminum 38mm
8GB 512MB RAM
Watch Ultra 3
64GB
Other
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
No
Loudspeaker
Watch Series 2 Aluminum 38mm
Yes
Watch Ultra 3
Yes, with dual speakers (86-decibel)
3.5mm jack
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
No
WLAN
Watch Series 2 Aluminum 38mm
Wi-Fi 802.11 b/g/n
Watch Ultra 3
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
Watch Series 2 Aluminum 38mm
4.0, A2DP
Watch Ultra 3
5.3, A2DP, LE
Positioning
Watch Series 2 Aluminum 38mm
GPS, GLONASS
Watch Ultra 3
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Watch Series 2 Aluminum 38mm
Yes
Watch Ultra 3
Yes
Radio
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
No
USB
Watch Series 2 Aluminum 38mm
No
Watch Ultra 3
No
Sensors
Watch Series 2 Aluminum 38mm
Accelerometer, gyro, heart rate
Watch Ultra 3
Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water)
Other
Watch Series 2 Aluminum 38mm
Natural language commands and dictation
Watch Ultra 3
Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Ultra Wideband (UWB) support (gen2 chip) Emergency SOS via satellite
Type
Watch Series 2 Aluminum 38mm
Li-Ion 273 mAh (1.03 Wh), non-removable
Watch Ultra 3
Li-Ion 599 mAh
Charging
Watch Series 2 Aluminum 38mm
Wireless
Watch Ultra 3
Wireless, 0-80% in 45 min
Colors
Watch Series 2 Aluminum 38mm
Case colors: silver, gold, rose gold, gray Band colors: gray, white, blue, yellow, pink, black Band types: sport, woven nylon
Watch Ultra 3
Natural, Black
Models
Watch Series 2 Aluminum 38mm
A1757
Watch Ultra 3
A3281, A3282
Price
Watch Series 2 Aluminum 38mm
About 420 EUR
Watch Ultra 3
€ 829.00
SAR
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
1.16 W/kg (head)
SAR EU
Watch Series 2 Aluminum 38mm
-
Watch Ultra 3
1.19 W/kg (head)