Tinksky Golf Scorer-Referee Golf Stroke Score Keeper Counter Wristband (Black) Color: Black. Material: Plastic, velcro Total Length: Approx. 24cm Counter Size (L * W * H): Approx. 3.5 * 2.5 * 0.8cm Wear it like a watch with its wrist strap for easy operation. When you get a shot, press the counter once. At the end of the game, it will add up the total score for you.