The product is an Apple Watch Series 4 with a 40mm Space Gray aluminum case and a black sport band. It is equipped with GPS functionality and is unlocked for use on any network. The smartwatch runs on Apple Watch OS and is compatible with iOS devices. This model features various sensors including an electrical heart sensor, optical heart sensor, barometric altimeter, accelerometer, gyroscope, and more. With a storage capacity of 16GB, this Apple Watch Series 4 offers a range of health and fitness tracking features for the user.