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Bro Rated
Watch Series 4 44mm A1978

Watch Series 4 44mm A1978

from Apple
Bro
24.5
Rated
view all Smartwatches

Overview & Features

Brand
Apple
Brief
The 44 mm variant of the Watch 4 sports the largest display on an Apple Watch yet. Electrical heart sensor. Re-engineered Digital Crown with haptic feedback.
Model
Watch Series 4 44mm A1978
OEM ID
N131bAP
Codename
Apple Watch 4,2
Released
2018 Sep 21
Announced
2018 Sep 12
Manufacturer
Quanta Computer
General Extras
Haptic touch feedback
Tactile touch feedback
Hardware Designer
Apple
List of Additional Features
Ion-X Sapphire glass screen, changeable straps, iOS 8.2 support, aluminium case, optical and electrical heart-rate sensors, LTPO OLED Retina Display

Technical Specifications

Display

Pixel Size
0.07796 mm/pixel
Resolution
368x448
164864 pixels
Display Area
1002.1 square millimeter
Display Type
Color AM-OLED
display
Display Width
28.69 mm
Pixel Density
326 PPI
Display Height
34.93 mm
Display Diagonal
45.2 mm
Display Color Depth
24 bit/pixel
Display Illumination
Self-illuminating
Display Subpixel Scheme
Yes
Display Area Utilization
59.9%
Number of Display Scales
16.8M
Scratch Resistant Screen
Sapphire Glass
Display Dynamic Range Depth
8 bit/pixel
Horizontal Full Bezel Width
9.31 mm

Power Supply

Battery
Lithium-ion polymer (LiPo)
built-in
1-cell
Wireless Charging
Yes
Estimated Battery Life
18.0 hours
Nominal Battery Voltage
3.81 Volts
Nominal Cell Voltage (1st cell)
3.81 Volts

Sound Playing

Audio Output
No
Loudspeaker(s)
mono

Cellular Phone

Supported Cellular Bands
No

Audio Subsystem

Audio Channel(s)
stereo

Sound Recording

Microphone(s)
mono

Auxiliary Camera

Aux. Camera Image Sensor
No

Built-in Sensors

Additional sensors
Altimeter
Barometer
Heart rate sensor
Light intensity sensor
Built-in gyroscope
Yes
Built-in accelerometer
Yes

Operative Memory

RAM Type
Yes
RAM Capacity
768 MiB RAM

Ingress Protection

Protection from liquids
7 Protected against the effect of immersion up to 1m of depth
Protection from solid materials
Yes
Immersion into liquids (depth limit)
5000 cm

Control Peripherals

Scroll Wheel
Pressable rotary scroll wheel
Touchscreen Type
Pressure sensitive capacitive multi-touch sensing
screen
Touchscreen Simultaneous Touch Points
Yes

Graphical Subsystem

Graphical Controller
N/A

Non-volatile Memory

Non-volatile Memory Type
Flash EEPROM
Non-volatile Memory Capacity
15258 MiB
Non-volatile Memory Interface
Yes

Physical Attributes

Mass
36.7 g
Depth
10.7 mm
Width
38 mm
Height
44 mm
Bounding Volume
17.9 ccm

Multimedia Broadcast

FM Radio Receiver
No

Satellite Navigation

GPS Antenna
Internal antenna
Supported GPS protocol(s)
GPS (NMEA 0183)
Complementary GPS Services
QZSS
Supported Galileo service(s)
E1
Supported GLONASS protocol(s)
L1OF

Software Environment

Platform
Apple iOS / iPadOS
Software Extras
Voice Command
Intelligent personal assistant
Operating System
Apple WatchOS 5

Audio/Video Interfaces

A/V Out
No

Auxiliary Camera No. 2

Aux. 2 Camera Image Sensor
No

Auxiliary Camera No. 3

Aux. 3 Camera Image Sensor
No

Auxiliary Camera No. 4

Aux. 4 Camera Focus
No
Aux. 4 Camera Image Sensor
No

Primary Camera System

Flash
No
Focus
No
Camera Image Sensor
No

Geographical Attributes

Market Regions
Africa
Asia
Australia
Central America
Eastern Europe
Europe
Middle East
North America (NA)
Oceania
South America (SA)
Southeast Asia
Western Europe
Worldwide
Market Countries
Algeria
Argentina
Australia
Austria
Bangladesh
Belarus
Belgium
Bolivia
Brazil
Bulgaria
Cambodia
Canada
Chile
China
Colombia
Costa Rica
Croatia
Czech Republic
Denmark
Ecuador
Egypt
Finland
France
Greece
Germany
Guatemala
HK
Honduras
Hungary
Indonesia
Ireland
Israel
Italy
Japan
Jordan
Kenya
Kuwait
Latvia
Malaysia
Mexico
Morocco
Myanmar
Netherlands
Nicaragua
Nigeria
Norway
NZ
Panama
Pakistan
Paraguay
Peru
Philippines
Poland
Portugal
Puerto Rico
Romania
Russia
Saudi Arabia
Serbia
Singapore
Slovakia
Slovenia
South Africa
South Korea
Spain
Sri Lanka
Sweden
Switzerland
Taiwan
Tanzania
Thailand
Tunisie
Turkey
Emirates (UAE)
Uganda
UK
Ukraine
USA
Vietnam

Secondary Camera System

Secondary Camera Sensor
No

Communication Interfaces

NFC
Yes
USB
No
No
Bluetooth
Bluetooth 5.0
Internal antenna
Wireless LAN
IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
Internal antenna
USB Connector
No
WLAN Controller IC
W3 Apple
Expansion Interfaces
No

Secondary Cellular Phone

Sec. Supported Cellular Networks
No

Secondary Auxiliary Camera

Sec. Aux. Cam. Image Sensor
No

Application processor, Chipset

CPU
Apple S4, 2018, 64 bit, dual-core

Secondary Auxiliary Camera No. 2

Sec. Aux. 2 Cam. Image Sensor
No

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