Golf swing trainer with Bluetooth function, capable of measuring head speed and distance. - Model Name: GST-7 BLE - Bluetooth Function: Yes - Measurement Functions: Head speed, ball speed, distance - Appearance Condition: Scratches on the corner - Country of Manufacture: Japan Thank you for viewing. I am selling this because I purchased a different ball flight measurement device. I bought it new, but I bumped the corner and it's slightly chipped. However, there were no problems with the operation. Everything in the photos is included. Please understand.