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Apple Watch Series 4 Aluminum
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Phone Insight
Full Specifications September 3, 2026
Apple Watch Series 4 Aluminum
Apple · 2018

Apple Watch Series 4 Aluminum

Apple Watch Series 4 Aluminum watch. Announced Sep 2018. Features 1.78″ display, Apple S4 chipset, 16 GB storage, 1000 MB RAM, Ion-X strengthened glass.

Display 1.78"
Chipset Apple S4
RAM 1 GB
Storage 16GB storage, no card slot
OS watchOS 5.0, up to watchOS 10.6.2
Build 36.7g, 10.7mm thickness

Launch

Announced 2018, September. Released 2018, September
Status Discontinued

Platform

OS watchOS 5.0, upgradable to watchOS 10.6.2
Chipset Apple S4
CPU Dual-core
GPU PowerVR

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
displayother 3D Touch display

Memory

Card slot No
Internal 16GB 1GB RAM

Camera

cam1modules No

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
bodyother 50m water resistant ECG certified (region dependent SW application; HW available on all models)

Battery

Type Li-Ion 292 mAh (1.12 Wh), non-removable
Charging Wireless

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

Network

Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 / 800 - Europe, Australia
4G bands 1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia
Speed HSPA, LTE

Features

Sensors Accelerometer, gyro, heart rate, barometer
featuresother Natural language commands and dictation (talking mode)

Misc

Colors Silver, Gold, Space Gray
Models A1975, A1976, A2007, A2008, A1977, A1978
Phone Insight phoneinsight.org/ Printed September 3, 2026

For live pricing, photos, and comparisons, visit phoneinsight.org/phones/apple-watch-series-4-aluminum/

In depth

Full specifications

Announced 2018, September. Released 2018, September
Status Discontinued
OS watchOS 5.0, upgradable to watchOS 10.6.2
Chipset Apple S4
CPU Dual-core
GPU PowerVR
Type Retina LTPO OLED, 1000 nits (peak)
Size 1.78 inches
Resolution 448 x 368 pixels (~326 ppi density)
Protection Ion-X strengthened glass
displayother 3D Touch display
Card slot No
Internal 16GB 1GB RAM
cam1modules No
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
bodyother 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Type Li-Ion 292 mAh (1.12 Wh), non-removable
Charging Wireless
Loudspeaker Yes
3.5mm jack No
WLAN Wi-Fi 802.11 b/g/n
Bluetooth 5.0, A2DP, LE
Positioning GPS, GLONASS, GALILEO, QZSS
NFC Yes
Radio No
USB No
Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 / 800 - Europe, Australia
4G bands 1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia
Speed HSPA, LTE
Sensors Accelerometer, gyro, heart rate, barometer
featuresother Natural language commands and dictation (talking mode)
Colors Silver, Gold, Space Gray
Models A1975, A1976, A2007, A2008, A1977, A1978
Price About 430 EUR
PhoneInsight Benchmark
16.8/100
Basic

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 14.2
Display 46
Battery 20
0.1%Popularity rank
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