Apple Watch SE (2nd generation, 44 mm) / Apple Watch Series 6 (40 mm, GPS)

Apple Watch SE (2nd generation, 44 mm): Apple Watch SE (2nd generation), 44 mm aluminium case; GPS and GPS + Cellular models. The 40 mm case, the original Apple Watch SE (2020) and Apple Watch SE 3 are separate models.

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 SE (2nd generation, 44 mm)	Apple Watch Series 6 (40 mm, GPS)
Release year	2022	2020
Case and weight	44 × 38 × 10.7 mm aluminium case; GPS 32.9 g, GPS + Cellular 33 g Weight is for the case only and rises with the band. The 44 mm case fits 140–245 mm wrists. Apple	—
Display	Retina LTPO OLED; 368 × 448 pixels, 977 sq mm display area, 326 ppi; up to 1000 nits; Ion-X glass SE has no always-on mode; the screen wakes when you raise your wrist. Ion-X is strengthened glass and is not as scratch-resistant as sapphire. 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	S8 SiP (64-bit dual-core processor); 2-core Neural Engine; 32 GB Storage holds music, podcasts and apps and cannot be expanded. Apple	—
Sensors	2nd-gen optical heart sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor The high-g accelerometer and gyroscope are used for Crash Detection. ECG, blood oxygen and temperature sensors are not included on this model. Apple	—
Safety features	Emergency SOS; International Emergency Calling; Fall Detection; Crash Detection Crash Detection can call emergency services after a severe car crash. Emergency SOS needs a cellular connection or Wi-Fi calling with internet access from the watch or a nearby iPhone. Apple	—
Battery	Up to 18 hours; about 80% charge in about 1.5 hours Apple measures 18 hours with 90 time checks, 90 notifications, 45 minutes of app use and a 60-minute workout with music; on the cellular model, 4 of those hours are on LTE. Longer GPS workouts shorten it. Apple	—
Water resistance	50 metres under ISO 22810:2010 Suitable for swimming, but not for scuba diving, water skiing or high-velocity water sports. Apple	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
Location and wireless	L1 GPS, GNSS, Galileo and QZSS; Wi-Fi 4 (802.11n); Bluetooth 5.3; LTE and UMTS on the GPS + Cellular model The cellular model can make calls and use data without your iPhone nearby; carrier support is required. Apple	—
Compatibility	iPhone Xs or later with iOS 18 The watch can only be set up and used with an iPhone; it does not work with Android phones. Apple	Requires an iPhone 6s or later with iOS 14 or later Apple
Colours	Midnight, Starlight and Silver 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
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
Battery and charging	—	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
Other	—	Speaker, microphone, Apple Pay, GymKit; ceramic and sapphire crystal back Apple
Size and weight	—	40 × 34 × 10.7 mm; 30.5 g (aluminium, without band) Apple