Science Purchase Digital Resettable Tally Counters - 5 Digit Range - Wear on Finger - Lap Counter / Keeper - Assorted Colors - Pack of 12 Package Included: 12 Pcs Finger Counters Case Size: 3 x 2.5 x 1.2cm/1.2'' x 1'' x 0.5'' (L*W*H); Band Size: 10.7 x 1.5cm/4.3'' x 0.6''(L*W) Fit Finger Girth: 5-9cm/2"-3.5" 0-99999 range, LCD display, counting button and reset button Manufactured by Science Purchase