Apple Watch Series 4 Aluminum
⚖️36.7 g (1.31 oz), 44 x 38 x 10.7 mm thickness
📱watchOS 5.0, upgradable to watchOS 10.6.1
💾16GB 1GB RAM, No card slot
1.78"
448x368 pixels
1GB RAM
Apple S4
292mAh
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Network
Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
• HSDPA 850 / 900 / 2100 / 800 - Europe, Australia
• HSDPA 850 / 1700(AWS) / 1900 / 800 - USA, LATAM, Canada
• HSDPA 2100 - China
4G bands
• 1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia
• 2, 4, 5, 12, 13, 17, 18, 19, 25, 26, 41 - USA, LATAM, Canada
• 1, 3, 39, 40, 41 - China
Speed
HSPA, LTE
Launch
Announced
2018, September. Released 2018, September
Status
Discontinued
Body
Dimensions
44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)
Weight
36.7 g (1.31 oz)
Build
Glass front, ceramic/sapphire crystal back, aluminum frame
SIM
eSIM
ECG certified (region dependent SW application; HW available on all models)
Display
Type
Retina LTPO OLED, 1000 nits (peak)
Size
1.78 inches
Resolution
448 x 368 pixels (~326 ppi density)
Protection
Ion-X strengthened glass
3D Touch display
Platform
OS
watchOS 5.0, upgradable to watchOS 10.6.1
Chipset
Apple S4
CPU
Dual-core
GPU
PowerVR
Memory
Card slot
No
Internal
16GB 1GB RAM
Camera
No
Sound
Loudspeaker
Yes
3.5mm jack
No
Comms
WLAN
Wi-Fi 802.11 b/g/n
Bluetooth
5.0, A2DP, LE
Positioning
GPS, GLONASS, GALILEO, QZSS
NFC
Yes
Radio
No
USB
No
Features
Sensors
Accelerometer, gyro, heart rate, barometer
Natural language commands and dictation (talking mode)
Battery
Type
Li-Ion 292 mAh (1.12 Wh), non-removable
Charging
Wireless
Misc
Colors
Silver, Gold, Space Gray
Models
A1975, A1976, A2007, A2008, A1977, A1978