Apple Watch Series 4 (44mm) vs Apple Watch Series 4 (40mm) Specs Comparison

Design

Dimensions
1.73 x 1.50 x 0.42 inches 44.0 x 38.0 x 10.7 mm	1.57 x 1.34 x 0.42 inches 40.0 x 34.0 x 10.7 mm
Weight
1.29 oz / 36.7 g	1.06 oz / 30.1 g
Materials
Frame: Aluminum	Frame: Aluminum
Resistance
Water	Water
Colors
Silver, Black	Silver, Black

Display

Size
1.8-inch, 59.89% screen-to-body	1.6-inch, 57.48% screen-to-body
Type
OLED, 1000 nits	OLED, 1000 nits
Resolution
448x368px, 326 PPI	394x324px, 325 PPI
Protection
Sapphire	Sapphire
Features
Pressure-sensitive, Scratch-resistant glass, Ambient light sensor	Pressure-sensitive, Scratch-resistant glass, Ambient light sensor

Hardware

System chip
Apple S4 (7 nm)	Apple S4 (7 nm)
Processor
Dual-core	Dual-core
GPU
Apple G11M	Apple G11M
Memory
1GB/16GB	1GB/16GB
Storage expansion
not expandable	not expandable
OS
watchOS (9.x, 8.x, 7.x, 6.x, 5)	watchOS (9.x, 8.x, 7.x, 6.x, 5)

Battery

Type
292 mAh	225 mAh
Charging
Magnetic charging	Magnetic charging

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
b,g,n 802.11 b, g, n	b,g,n 802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Heart rate, Barometer, Ambient light sensor	Accelerometer, Gyroscope, Heart rate, Barometer, Ambient light sensor
Location
Glonass, Galileo, QZSS	Glonass, Galileo, QZSS
Other
NFC	NFC

Multimedia

Speakers
Loudspeaker	Loudspeaker
Additional microphone(s)
Noise cancellation	Noise cancellation

Cellular

Data Speed
LTE, HSPA	LTE, HSPA
SIM type
eSIM	eSIM

Alternative variants

With stainless steel case

Weight	1.40 oz / 39.8 g
Materials	Frame: Stainless steel

Discover more

Full Specs Apple Watch Series 4 (44mm) Specs

Full Specs Apple Watch Series 4 (40mm) Specs