Little metal 4 digit stroke counter or tally will go up to 1000. You can hold it in your hand with the thumb ring or leave it a pocket. Works with a lanyard or string through it too. Just click the top button and the numbers go up. Reset at the side knob. Nice design. Looks good. Easy to see and big enough not to get lost but small enough to hold in your hand. Forgot to use the tape measure but box measures 5cm x 5cm x 4cm. Comes in a little box. Has to go as a small parcel so £3 cost unfortunately :( if you want 2 or more items, the postage charge should only apply once. collection possible from ST5 or ST4.