GL02 laser rangefinder for highly accurate distance measurement. - Model Name: GL02 - Brand Name: GREENON - Included: USB cable - Product Type: Laser Rangefinder Thank you for viewing. I used it once on the course and it was convenient without any problems. I personally wanted to play while looking at the course layout, so I switched to GPS. There is no manual, but there is a manual available online. Please understand the 3N rule (no returns, no refunds, no exchanges).