Apple Watch Series 3 GPS + Cellular Smartwatch (Space Grey, 42mm)

S3 Dual Core ProcessorYesHeart Rate Sensor, Accelerometer, Gyroscope, Ambient Light Sensor, Barometric Altimeter312 x 390 pixelsOLED RetinaUpto 18 hrs (Based on Usage)Black42mmIphone 6 Or LaterWatch Faces (All Customizable), Set A Reminder, Send Calendar Invitation, Get Alerts From Favorite Apps, Activity Sharing