Mobile Tech

Apple Watch Series 4 Aluminum specification and features

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 42.2/5.76 Mbps, LTE
Launch
Announced 2018, September
Status Available. Released 2018, September
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
50m water resistant
ECG certified (region dependent SW application; HW available on all models)
Display
Type Retina LTPO OLED, 1000 nits (peak)
Size 1.78 inches, 10.0 cm2 (~60.0% screen-to-body ratio)
Resolution 448 x 368 pixels (~326 ppi density)
Protection Ion-X strengthened glass
3D Touch display
Platform
OS watchOS 5.0, upgradable to 7.1
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
GPS Yes, with A-GPS, GLONASS, GALILEO, QZSS
NFC Yes
Radio No
USB No
Features
Sensors Accelerometer, gyro, heart rate (2nd gen), barometer
Natural language commands and dictation (talking mode)
Battery
Type Li-Ion 292 mAh (1.12 Wh), non-removable
Charging Wireless charging
Stand-by Up to 18 h (mixed usage)
Misc
Colors Silver, Gold, Space Gray
Models A1975, A1976, A2007, A2008, A1977, A1978

About the author

admin