Apple Watch SE 3 (44 mm, GPS) / Apple Watch Series 7 (45 mm, GPS)

Apple Watch SE 3 (44 mm, GPS): 44 mm GPS · aluminium case (Midnight / Starlight)

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 3 (44 mm, GPS)	Apple Watch Series 7 (45 mm, GPS)
Release year	2025	2021
Announcement	September 9, 2025; on sale from September 19, 2025 Apple	—
Case	44 mm aluminium; 44 × 38 × 10.7 mm A 40 mm version also exists with different size, display and battery values. Apple	—
Weight	32.9 g (GPS) Apple	—
Display	Always-On Retina, LTPO OLED; 368 × 448 pixels, 977 mm², 326 ppi Because the LTPO panel can lower its refresh rate, the display keeps showing the time and notifications with the wrist down; this is the first SE with Always-On. 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
Brightness	1,000 nits peak; 2 nits minimum Apple	—
Front glass	Ion-X glass Apple claims 4x better crack resistance than the SE 2. Apple	—
Processor	Apple S10 SiP; 64-bit dual-core processor, 4-core Neural Engine The S10 enables the Always-On display, double tap and wrist flick gestures, on-device Siri and fast charging. Apple	—
Storage	64 GB Apple	32 GB Apple
Sensors	Second-generation optical heart sensor, temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor There is no ECG or blood oxygen sensor. The temperature sensor is not intended for medical use. Apple	—
Health features	Heart rate and rhythm notifications, sleep apnoea notifications, sleep stages and sleep score, cycle tracking Feature availability varies by country. Apple	—
Gestures	Double tap; wrist flick (watchOS 26) Wrist flick dismisses notifications and calls, silences alarms and returns to the watch face with one hand. Apple	—
Speaker	Yes; can play music and podcasts Apple	—
Water resistance	50 metres (ISO 22810:2010); swimproof Apple	—
Wireless	Wi-Fi 4 (802.11n, 2.4 GHz only); Bluetooth 5.3 Apple	—
Location	L1 GPS, GLONASS, Galileo, QZSS, BeiDou This is single-frequency (L1) GPS; position can drift under trees and between tall buildings. Apple	GPS, GLONASS, Galileo, QZSS and BeiDou; compass; always-on altimeter Apple
Battery life	Up to 18 hours of normal use; up to 32 hours in Low Power Mode In Apple's test the watch stays connected to an iPhone over Bluetooth throughout; results vary with use and settings. Apple	—
Charging	Fast charging: about 80% in 45 minutes; 15 minutes gives up to 8 hours of use Times are with the included Apple Watch Magnetic Fast Charger to USB-C Cable; no adapter is included. Apple	—
Compatibility	iPhone 11 or later, iPhone SE (2nd generation) or later 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
Colour options	Midnight or Starlight aluminium case 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
Connectivity	—	Wi-Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.0 LTE/UMTS is only on GPS + Cellular models. 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
Colours	—	Aluminium: Midnight, Starlight, Green, Blue, (PRODUCT)RED Apple