I don't have it in front of me right now but I would say it 's between 4-5" wide, 2-3" tall, and about 1" thick. I don't need to press anything while I'm driving but would like to see it under caution. I would like to mount it to the steering shaft bracket if possible. I saw a guy last year at Erie speedway that had it integrated with a tach on his steering shaft bracket.