Spherical Sapphire Glass, Aerospace-grade Titanium Case, 904L Stainless Steel Case Multi-sensing X-TAP Technology Real-time Fingertip Blood Oxygen Phone-free eSIM Cellular Calling and Navigation Two Battery Modes Switch in just Seconds Dual-device Connections Dimension: 46 mm x 46.7 mm x 11.3 mm Acceleration sensor | Gyroscope sensor | Compass sensor | Optical heart rate sensor 6.0 | Barometer sensor | Ambient light sensor | Body temperature sensor | ECG sensor | Depth sensor | Tactile Sensor Just 1 month used Mind conditioned No scratches no dents Full box available 7 day battery back up with power saving mode