Metal ConstructionManual palm counter made of stainless steel, durability and lifespan, With smooth surface, its comfortable to use and will not easy to leave any scratches. Portable and easy to storeThe counter Outfitting with a metal finger ring for conveniently hanging, just stick a thumb or finger into it, then you could easily grip the counter at any situation. Easy to use, no battery required The counters are no batteries required, Offers a 4-figure register, counts to 9,999. Simple to use and works as you expected. Data can be reset and reusedTheres a reset knob on the counter, just turning the knob and the number can return to zero easily. Precautions If the figures cannot be reset normally, please try to rotate the reset knob counterclockwise then clockwise.