Apple Watch SE (2nd generation, 44 mm) / Apple Watch Series 7 (45 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 7 (45 mm, GPS): Apple Watch Series 7, 45 mm aluminium case, GPS model. The 41 mm case, GPS + Cellular, stainless steel and titanium versions are separate configurations with different display area and weight.

Specification	Apple Watch SE (2nd generation, 44 mm)	Apple Watch Series 7 (45 mm, GPS)
Release year	2022	2021
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; 396 × 484 pixels; 1,143 mm² display area; 1,000 nits brightness The 41 mm case has 352 × 430 pixels and 904 mm² of display area. The LTPO panel lowers its refresh rate when the wrist is down so the screen can stay on. 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	—
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 iPhone 6s or later with the latest iOS Per Apple’s launch documentation; some features are unavailable when the watch is set up through Family Setup. Apple
Colours	Midnight, Starlight and Silver Apple	Aluminium: Midnight, Starlight, Green, Blue, (PRODUCT)RED Apple
Chip	—	S7 SiP with 64-bit dual-core processor; W3 wireless chip; U1 (Ultra Wideband) Ultra Wideband availability varies by region. Apple
Health sensors	—	Blood oxygen sensor (Blood Oxygen app); electrical heart sensor (ECG app); third-generation optical heart sensor Blood oxygen readings are not for medical use. The ECG app and irregular rhythm notification need the latest watchOS/iOS and are not intended for people under 22. Apple
Motion and safety	—	Accelerometer up to 32 g-forces with fall detection; gyroscope; ambient light sensor; Emergency SOS On the GPS model, Emergency SOS needs the iPhone nearby or a known Wi-Fi network with Wi-Fi Calling; international emergency calling is only on the GPS + Cellular model. Apple
Location	—	GPS, GLONASS, Galileo, QZSS and BeiDou; compass; always-on altimeter Apple
Connectivity	—	Wi-Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.0 LTE/UMTS is only on GPS + Cellular models. Apple
Storage	—	32 GB Apple
Battery and charging	—	Up to 18 hours; built-in lithium-ion battery; USB-C magnetic fast charging cable Apple’s battery test was done in August 2021 with preproduction watches paired to an iPhone; actual life varies with use and settings. The fast-charge test used the A2515 cable and a 20 W USB-C adapter; the adapter is not in the box. Apple
Durability	—	Water resistant to 50 metres under ISO 22810:2010; IP6X dust resistant; ceramic and sapphire crystal back Suitable for shallow-water activities such as swimming in a pool or the sea; not for scuba diving, waterskiing or high-velocity water. Apple
Size and weight	—	45 × 38 × 10.7 mm; aluminium: 38.8 g The 45 mm stainless steel case weighs 51.5 g and titanium 45.1 g. Apple