SelfTek LCD Tally Counter Electronic Row Counter with Finger Ring Random Color Perfect for knitting, sporting and crocheting.Counts range: 00000-99999 Small and compact design, one hand operation Counter Speed depends on your pushing speed Easy to read and use,can be a key cleared Dimensions:Approx. 3.5cm x 3cm x 1.6cm/1.38" x 1.18" x 0.63".Total length(unfolded):10.5cm