No batteries required, works in any weather condition,Separate counters for strokes and putts. Sturdy but light, the buttons are not stuck to the wheel, durable and not easy to break. Quickly return to 0, 2 digits dual dial. Two digit counter: Double dial design, can count the shots or putts of 2 players at the same time. It is convenient for scoring in games and competitions. Single digit: press to nine, press again to reset.Use the round paddle to quickly adjust the tens digit to zero in the direction shown by the arrow.