Smartwatch Apple Watch SE (3rd generation) SE 3 GPS + Cellular 40mm Midnight Aluminium Case with Midnight Sport Band S/M

The Apple Watch SE 3 is a smartwatch with a bright OLED touchscreen designed for everyday use. It features an Always-On display for glanceable information, sleep score and wrist temperature sensing for improved health insights, and safety functions such as Crash Detection and Fall Detection. The device offers water resistance to 50 m, built-in microphone and speaker, heart rate monitoring and motion sensors, and supports GPS and common wireless connections. Battery life is rated around 18 hours with faster charging available.

Advantages

The Always-On display provides constant visibility of time and notifications without raising your wrist. Health tracking includes sleep scoring and wrist temperature sensing that feed into the Vitals app for clearer trends. Stronger glass improves resistance to cracks, and safety features like Crash Detection and Fall Detection help summon assistance when needed. Fast charging reduces downtime and the watch maintains standard smartwatch connectivity including Wi-Fi, Bluetooth 5.3 and NFC.

Key specifications

• Display type: Digital OLED touchscreen
• Resolution: 324 x 394 pixels, 1000 cd/m2 brightness
• Always-On display: Yes
• Health sensors: Heart rate monitor, wrist temperature sensor
• Activity sensors: Accelerometer, gyroscope, activity tracker
• Safety features: Crash Detection, Fall Detection
• Water resistance: Up to 50 m
• Connectivity: 5G GPS, Galileo, QZSS, Wi-Fi, Bluetooth 5.3, NFC
• Audio: Built-in microphone and speaker
• Battery: Built-in Li-Ion, up to 18 hours; supports fast charging

How to use

Charge the watch using the supplied charger until the battery reaches a full charge, then pair it with your iPhone following on-screen instructions. Wear the watch on your wrist to enable continuous heart rate, motion and temperature measurements. Use the touchscreen and side controls to navigate apps, view notifications and activate safety features. Swim or shower with the watch within the specified 50 m water resistance rating, and update watchOS when prompted for improved features and security.

Recommendations

For reliable health and safety tracking, wear the Apple Watch SE 3 snugly but comfortably on your wrist and keep the software up to date. If you plan to use sleep score and wrist temperature sensing, wear the watch during sleep and charge it during a consistent daily window to maintain battery availability.