This is a GreenOn A1 II golf watch. It hasn't been used much and is in good condition. - Model: GREENON A1 II - Color: Black - Accessories: Charging cable - Functions: GPS navigation, watch function It uses the Michibiki satellite system and has an accuracy of within 1 meter. You can see the distance to the green edge and green center. It supports almost all golf courses in Japan. You can also use the app to check your score and distances for the day. Thank you for looking.