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Apple Watch Series 4

A1977 · A1978 · Watch4,1 · Watch4,2 · Watch4,3 · Watch4,4 · 2018–2019 · watch

Specifications

Cpu: Apple S4 SiP (64-bit dual-core)
Battery: 18-hour rated
Display: LTPO OLED Retina display, larger edge-to-edge design
Storage: base: 16 GB · options:
Cellular: Optional LTE
Case Sizes: 40 mm · 44 mm
Os Support: latest: watchOS 10.6 · shipped: watchOS 5.0
Release Price: $399

Variants

Colors

Space GraySilverGold

Models

AluminumStainless Steel

Upgrade paths

battery

New OEM-spec cell · Display-first opening through adhesive with fragile cables; iFixit rates the repair as difficult.

~$35

HARD

storage

Flash soldered inside the sealed S4 SiP, not user-upgradable

LOCKED

other

Any band in the matching lug size · Bands swap tool-free via the slide-in lug system; 40 mm cases take 38 mm-class bands, 44 mm cases take 42 mm-class bands.

EASY