Cherlynn Low for Engadget 90 100 Expert Score Best smartwatch overall Apple Watch Series 11 $399.00 Tracks: Sleep, activity, calories, stress | Connectivity: Bluetooth, Wi-Fi, Cellular (optional) | GPS: Yes, built in | Water resistant: Yes | Assistant support: Siri | Display: Always-on, wide-angle OLED touchscreen | Weight: 37.8 grams | Battery life: 24 hours Read our full Apple Watch Series 11 review Apple didn't add too many new features to the Watch Series 11 that would drastically change your daily experience with it, but it did make one crucial improvement: battery life.