First Generation Suunto Core, no Bluetooth, no trying to read a text, no talking into your watch like a doosh.. This watch is in great condition. It has a black digital screen with a yellow accent bezel. This watch has an altimeter, barometer, compass, temperature, and light function. The battery has been replaced, and all the functions work properly. If you are sick of your watch yelling at you with beeps and buzzes because it is acting like a sad front man for your phone, then this is your answer. This watch is not rechargeable and works off a coin battery. An altimeter is based on a pressure sensor and must be set before each trek.