【Material】：-Hand tally counter is made of metal, lightweight and easy to carry. 【Size】：-Hand tally counter has a diameter of 1.85 inch / 4.7 cm and a height of 1.22 inch / 3 cm (without iron ring, switch and pressure handle). 【No battery needed】：-This is a mechanical tally counter, you can use it anytime, anywhere. 【Widely used】：-Hand tally counter is very suitable for lecture halls, restaurants, schools, traffic statistics, bars and occasions where multiple people or various sports activities (such as golf, running, etc.) are required. In addition, it can also help children learn to count.