Apple Watch Series 10 (46 mm, GPS, aluminium) / Apple Watch Series 6 (40 mm, GPS)

Apple Watch Series 10 (46 mm, GPS, aluminium): 46 mm aluminium case, GPS only (no cellular); Jet Black, Rose Gold and Silver. The 42 mm case, GPS + Cellular and titanium versions differ in weight, materials and connectivity.

Apple Watch Series 6 (40 mm, GPS): Apple Watch Series 6, 40 mm aluminium case, GPS (2020). The 44 mm and GPS + Cellular versions, stainless steel/titanium cases and the Nike and Hermès editions are separate.

Specification	Apple Watch Series 10 (46 mm, GPS, aluminium)	Apple Watch Series 6 (40 mm, GPS)
Release year	2024	2020
Case	46 mm aluminium; Ion-X front glass The aluminium version uses Ion-X glass; the titanium versions have sapphire crystal. Apple	—
Display	LTPO3 OLED Always-On Retina, wide-angle OLED; 416 × 496 pixels, 326 ppi; 1220 mm² display area Up to 2000 nits and down to 1 nit. Apple says the wide-angle OLED looks up to 40% brighter when viewed at an angle, making the watch easier to read without raising the wrist. Apple	Always-On Retina LTPO OLED; 324 × 394 pixels, 759 mm² display area; 1000 nits The Always-On display keeps the time and complications visible with the wrist down. Apple
Chip and storage	S10 SiP; 64-bit dual-core processor, 4-core Neural Engine; 64 GB storage Apple	—
Health and motion sensors	Electrical heart sensor; third-generation optical heart sensor; blood oxygen sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor The electrical sensor enables ECG recordings and the optical sensor continuous heart rate. Availability of health features varies by country. Apple	—
Water and dust	50 m water resistance (WR50, ISO 22810:2010); IP6X dust; depth gauge and water temperature sensor Suitable for shallow-water activities such as swimming, not for scuba diving or high-velocity water sports. The depth gauge is for snorkelling down to 6 metres. Apple	—
Connectivity and location	Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband; L1 GPS, GLONASS, Galileo, QZSS, BeiDou This version has no cellular connection, so calls and data away from the phone need Wi-Fi. Location uses only the L1 band; there is no dual-frequency GPS. Apple	—
Battery and charging	Up to 18 hours normal use, up to 36 hours in Low Power Mode; about 80% in around 30 minutes with fast charging Fast charging uses the included magnetic fast charger to USB-C cable; the adapter is sold separately. Apple	Built-in lithium-ion battery; up to 18 hours; magnetic charging cable (1 m) The 18-hour figure comes from Apple’s August 2020 testing with pre-production watches paired to an iPhone; it varies with use. Apple
Size and weight	46 × 39 × 9.7 mm; 36.4 g (without band) Apple	40 × 34 × 10.7 mm; 30.5 g (aluminium, without band) Apple
Compatibility	iPhone Xs or later with iOS 18 or later (including iPhone SE 2nd generation or later) An iPhone is required for setup and use; it does not work with Android phones. Apple	Requires an iPhone 6s or later with iOS 14 or later Apple
Case and version	—	40 mm aluminium case, GPS; Silver, Space Gray, Gold, Blue, (PRODUCT)RED Stainless steel and titanium cases were only sold in the GPS + Cellular version. The 44 mm model uses the same chip but has a different display and weight. Apple
Water resistance	—	50 metres (ISO 22810:2010) Suitable for shallow-water swimming in a pool or the sea, but not scuba diving, waterskiing or high-velocity water. Apple
Chip	—	S6 SiP with 64-bit dual-core processor; W3 wireless chip; U1 Ultra Wideband chip Ultra Wideband availability varies by region. Apple
Storage	—	32 GB Apple
Health sensors	—	Blood oxygen sensor (Blood Oxygen app), electrical heart sensor (ECG app), third-generation optical heart sensor Apple states Blood Oxygen measurements are not for medical use and are only designed for general fitness and wellness. The ECG app is not intended for people under 22. Apple
Other sensors and safety	—	Always-on altimeter, compass, accelerometer up to 32 g with fall detection, gyroscope, ambient light sensor; Emergency SOS On the GPS model, Emergency SOS needs the iPhone nearby; otherwise the watch must be on a known Wi‑Fi network with Wi‑Fi Calling on. International emergency calling is only on the cellular model. Apple
Wireless	—	Wi‑Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.0 LTE and UMTS are only on GPS + Cellular models. Apple
Other	—	Speaker, microphone, Apple Pay, GymKit; ceramic and sapphire crystal back Apple