Screen — 1.3-inch AMOLED (390 x 390p)
Protection — Corning Gorilla Glass 3
Waterproofing — 5ATM with swimming support
Sensors — BioTrackerTM PPG Bio-Tracking Optical Sensor
·                  3-axis acceleration sensor
·                  Geomagnetic sensor
·                  Ambient light sensor
Positioning — GPS + GLONASS
Connectivity — Bluetooth 5.0 LE
Battery — 390mAh
Supported OS — Android 5.0 And iOS 10.0

• WHY APPLE WATCH SE — All the essentials to help you monitor your fitness, keep connected, track your health, and stay safe. Now up to 20 percent faster, with features like Crash Detection and enhanced workout metrics, it’s a better value than ever.
• EASILY CUSTOMIZABLE — Available in a range of sizes and colors, with dozens of bands to choose from and watch faces with complications tailored to whatever you’re into.
• HEALTH AND SAFETY FEATURES — Get help when you need it with Crash Detection, Fall Detection, and Emergency SOS. Get deep insights into your health, including notifications if you have an irregular rhythm or an unusually high or low heart rate.
• SIMPLY COMPATIBLE — It works seamlessly with your Apple devices and services. Unlock your Mac automatically. Find your devices with a tap. Pay and send money with Apple Pay. Apple Watch requires an iPhone 8 or later with the latest iOS version.
• SWIMPROOF AND STYLISH — Water resistant to 50 meters. Three finishes. And a redesigned, color-matched back case made with a new production process that reduces its carbon emissions over 80 percent.
• APPS ON YOUR WRIST — With access to tens of thousands of apps on the App Store right on your wrist, Apple Watch is the perfect personal device for whatever you love to do.
• A POWERFUL FITNESS PARTNER — The enhanced Workout app gives you new ways to train and advanced metrics for more information about your workout performance. And Apple Watch comes with three months of Apple Fitness+ free.