Screen size
Watch SE 31.8"
Watch Series 9 AluminumWinner: 1.9"+6.3%
Quick verdict
Watch Series 9 Aluminum leads the measured specs 4-2.
Measured wins
Watch SE 3
2
spec wins
Ties
7
equal specs
Watch Series 9 Aluminum
4
spec wins
Overall winner
Screen size
Technology
Watch SE 3
GSM / HSPA / LTE / 5G
Watch Series 9 Aluminum
GSM / HSPA / LTE
2G bands
Watch SE 3
GSM 850 / 900 / 1800 / 1900
Watch Series 9 Aluminum
GSM 850 / 900 / 1800 / 1900
3G bands
Watch SE 3
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK, HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
Watch Series 9 Aluminum
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK, HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
4G bands
Resolution
Refresh rate
Peak brightness
Pixel density
equal specsCPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Watch SE 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
Watch Series 9 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
5G bands
Watch SE 3
SA/NSA
Watch Series 9 Aluminum
-
Speed
Watch SE 3
HSPA, LTE, 5G
Watch Series 9 Aluminum
HSPA, LTE
Announced
Watch SE 3
2025, September 09
Watch Series 9 Aluminum
2023, September 12
Status
Watch SE 3
Available. Released 2025, September 19
Watch Series 9 Aluminum
Available. Released 2023, September 22
Dimensions
Watch SE 3
44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)
Watch Series 9 Aluminum
45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
Weight
Watch SE 3
26.4 g or 33 g (1.16 oz)
Watch Series 9 Aluminum
31.9 g (41mm), 38.7 g (45mm) (1.13 oz)
Build
Watch SE 3
Glass front, plastic/sapphire crystal back, aluminum frame
Watch Series 9 Aluminum
Glass front, ceramic/sapphire crystal back, aluminum frame
SIM
Watch SE 3
eSIM
Watch Series 9 Aluminum
eSIM
Other
Watch SE 3
50m water resistant
Watch Series 9 Aluminum
IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Type
Watch SE 3
Retina LTPO OLED, 1000 nits (peak)
Watch Series 9 Aluminum
Retina LTPO OLED, 2000 nits (peak)
Size
Watch SE 3
1.78 inches
Watch Series 9 Aluminum
1.9 inches
Resolution
Watch SE 3
448 x 368 pixels (~326 ppi density)
Watch Series 9 Aluminum
484 x 396 pixels (~326 ppi density)
Protection
Watch SE 3
Ion-X strengthened glass (2025 gen)
Watch Series 9 Aluminum
Ion-X strengthened glass
OS
Watch SE 3
watchOS 26, upgradable to watchOS 26.2.1
Watch Series 9 Aluminum
watchOS 10, upgradable to watchOS 26.2.1
Chipset
Watch SE 3
Apple S10
Watch Series 9 Aluminum
Apple S9
CPU
Watch SE 3
Dual-core
Watch Series 9 Aluminum
Dual-core
GPU
Watch SE 3
PowerVR
Watch Series 9 Aluminum
PowerVR
Card slot
Watch SE 3
No
Watch Series 9 Aluminum
No
Internal
Watch SE 3
64GB
Watch Series 9 Aluminum
64GB
Other
Watch SE 3
No
Watch Series 9 Aluminum
No
Loudspeaker
Watch SE 3
Yes
Watch Series 9 Aluminum
Yes
3.5mm jack
Watch SE 3
No
Watch Series 9 Aluminum
No
WLAN
Watch SE 3
Wi-Fi 802.11 b/g/n
Watch Series 9 Aluminum
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
Watch SE 3
5.3, A2DP, LE
Watch Series 9 Aluminum
5.3, A2DP, LE
Positioning
Watch SE 3
GPS, GLONASS, GALILEO, QZSS
Watch Series 9 Aluminum
GPS, GLONASS, GALILEO, QZSS, BDS
NFC
Watch SE 3
Yes
Watch Series 9 Aluminum
Yes
Radio
Watch SE 3
No
Watch Series 9 Aluminum
No
USB
Watch SE 3
No
Watch Series 9 Aluminum
No
Sensors
Watch SE 3
Accelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, compass, temperature (body)
Watch Series 9 Aluminum
Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
Other
Watch SE 3
Media playback
Watch Series 9 Aluminum
Temperature sensing (0.01˚ accuracy) Ultra Wideband (UWB) support (gen2 chip)
Type
Watch SE 3
Li-Ion
Watch Series 9 Aluminum
Li-Ion 308 mAh
Charging
Watch SE 3
Wireless, 80% in 45 min
Watch Series 9 Aluminum
Wireless, 0-80% in 45 min
Colors
Watch SE 3
Midnight, Starlight
Watch Series 9 Aluminum
Midnight, Starlight, Silver, Pink, Red
Models
Watch SE 3
A3325, A3324, A3328, A3326, A3327, A3329, A3391, A3392
Watch Series 9 Aluminum
A2982, A2984, A2983, A2985, Watch7,1, Watch7,2, Watch7,3, Watch7,4
SAR
Watch SE 3
1.18 W/kg (head)
Watch Series 9 Aluminum
1.02 W/kg (head)
SAR EU
Watch SE 3
0.42 W/kg (head)
Watch Series 9 Aluminum
0.64 W/kg (head)
Price
Watch SE 3
€ 244.00
Watch Series 9 Aluminum
About 340 EUR