Apple Watch Ultra 3 vs Google Pixel Watch 4 (45mm) Specs Comparison

Availability

Officially announced
Sep 09, 2025	Aug 20, 2025
Scheduled release
(Official) Sep 19, 2025
Prices (MSRP)
$799	2GB/32GB - $400

Design

Dimensions
1.93 x 1.73 x 0.47 inches 49 x 44 x 12 mm	1.77 x 1.77 x 0.48 inches 45 x 45 x 12.3 mm
Weight
2.17 oz / 61.6 g	1.29 oz / 36.7 g
Materials
Back: Ceramic Frame: Titanium	Frame: Aluminum
Resistance
Water, Dust; IP6X; MIL-STD-810 certified	50m/5ATM water resistance; IP68
Keys
	Right: Other
Colors
Natural, Black	Moonstone, Silver

Display

Size
1.9-inch	1.4-inch
Type
OLED, 3000 nits	AMOLED, 3000 nits
Resolution
502x410px, 338 PPI	456x456px, 461 PPI
Protection
Sapphire	Corning Gorilla Glass 5

Hardware

System chip
Apple S10	Qualcomm W5+ Gen 2 SW5100 (4 nm)
Processor
Dual-core	Quad-core
GPU
PowerVR	Adreno 702
Memory
1GB/64GB	2GB/32GB
Storage expansion
not expandable	not expandable
OS
watchOS (10.x)	Wear OS

Battery

Type
Li - Ion	455 mAh, Li - Ion
Charging
Qi wireless charging	Magnetic charging

Connectivity & Features

Bluetooth
5.3	6.0
WLAN
a,b,g,n,ac 802.11 b, g, n	a,b,g,n,ac 802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Thermometer, Barometer, ECG, Blood Oxygen	Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Thermometer, Barometer, ECG, Blood Oxygen, Ambient light sensor
Location
A-GPS, Glonass, Galileo, BeiDou, QZSS	Glonass, Galileo, Emergency SOS via satellite (SMS sending/receiving)
Other
NFC, Ultra Wideband (UWB)	NFC, Ultra Wideband (UWB), Health sensor

Multimedia

Speakers
Multiple speakers	Loudspeaker

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 25, 26, 66
4G (TDD) Bands
39, 40, 41
3G Bands
1, 2, 4, 5
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s	LTE
SIM type
eSIM	eSIM

Discover more

Full Specs Apple Watch Ultra 3 Specs

Full Specs Google Pixel Watch 4 (45mm) Specs