The Apple Watch SE (2nd Generation) delivers a capable smartwatch experience powered by Apple's S8 SiP chip with a 64-bit dual-core processor and 2-core Neural Engine, along with 32GB of onboard storage. The 44mm Midnight aluminum case pairs with a Midnight Sport Band in M/L size, fitting wrists from 140 to 245mm. The Retina LTPO OLED display measures 368 by 448 pixels at 326 pixels per inch, reaches up to 1000 nits of brightness, and is protected by Ion-X front glass.

This GPS model provides location tracking via L1 GPS, GNSS, Galileo, and QZSS, and stays connected through Wi-Fi 4 (802.11n) and Bluetooth 5.3. A robust sensor array includes a second-generation optical heart sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, and ambient light sensor. Water resistance is rated to 50 meters, making the watch fully swimproof across pool and open water activities.

Health and safety capabilities include Crash Detection, Fall Detection, Emergency SOS with international emergency calling, heart rate monitoring with high, low, and irregular rhythm notifications, sleep tracking with sleep stages, and noise monitoring. Workout support spans running with advanced metrics such as stride length and ground contact time, swimming with automatic stroke detection and SWOLF scoring, cycling, hiking with topographic maps, and dozens of other activity types. Apple Pay is supported for contactless payments, and the watch runs on watchOS for a full smartwatch experience.

Battery life extends up to 18 hours of normal use, with charging to 80% taking approximately 1.5 hours. The case is built from 100% recycled aluminum, and the Apple Watch SE paired with a Sport Loop is among Apple's first certified carbon neutral products, achieving a 75% emissions reduction against baseline.