Apple Watch SE 3 Smartwatch with GPS. 40mm aluminum case and sport band, Midnight color (Small/Medium). Fitness and sleep tracker, heart rate monitor with always-on display. Details Special Feature: Notifications Connectivity Technology: Bluetooth, Wi-Fi Battery Cell Composition: Lithium Ion Screen Size: 40 millimeters Brand: Apple Model Name: Apple Watch SE (3rd generation, GPS) Style: Casual Color: Midnight Aluminum / Midnight Age Range (Description): Adult Display Type: OLED Display