Apple Watch Ultra 3
📅Released 2025, September 19
⚖️61.6 g or 61.8 g (black) (2.15 oz), 49 x 44 x 12 mm thickness
📱watchOS 26, upgradable to watchOS 26.2
💾64GB, No card slot
1.98"
514x422 pixels
N/A
Apple S10
599mAh
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Network
Technology
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
• HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
• HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA, LATAM, Canada
4G bands
• 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
SA/NSA
Speed
HSPA, LTE, 5G
Launch
Announced
2025, September 09
Status
Available. Released 2025, September 19
Body
Dimensions
49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in)
Weight
61.6 g or 61.8 g (black) (2.15 oz)
Build
Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 5)
SIM
eSIM
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)
Display
Type
Retina LTPO3 OLED, 3000 nits (peak)
Size
1.98 inches
Resolution
514 x 422 pixels (~326 ppi density)
Protection
Sapphire crystal glass
Wide-angle OLED
Platform
OS
watchOS 26, upgradable to watchOS 26.2
Chipset
Apple S10
CPU
Dual-core
GPU
PowerVR
Memory
Card slot
No
Internal
64GB
Camera
No
Sound
Loudspeaker
Yes, with dual speakers (86-decibel)
3.5mm jack
No
Comms
WLAN
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
5.3, A2DP, LE
Positioning
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Yes
Radio
No
USB
No
Features
Sensors
Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water) Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Ultra Wideband (UWB) support (gen2 chip) Emergency SOS via satellite
Battery
Type
Li-Ion 599 mAh
Charging
Wireless, 0-80% in 45 min
Misc
Colors
Natural, Black
Models
• A3281
• A3282
SAR
1.16 W/kg (head)
SAR EU
1.19 W/kg (head)