I bought the above product but it failed to function to acquire the target and provide accurate yardage. I know this to be true because I compared the yardage with my GPS and another player who had a different brand rangefinder . After two golf outings I decided to contact Rock Bottom to get a solution. They refused to accept the defective unit and instructed me to contact the manufacturer. I had incurred additional cost for buying a defective product. So, lesson learned I will never buy anything from this vendor again.