you wont find another one like it !!!!! a digital lap counter (vintage but converted to sport track ) operates on either a 9 volt battery (supplied) or on the origional rear 12 volt terminals ,there is also an on off switch fitted .the battery goes inside the hut so its a free standing item with no wires to a power feed. it works perfectly in either direction (unlike the old classic hit or miss track) and is much nicer than the scalextric digital ugly one. also easier to see across the layout with bright figures on top of the tower. i made it to go on the f1 curcuit origionally . i really hated the scalextric item it did not fit in with the layout ,i tried the origional classic operating track with converters but it was not consistent (well rubbish really) hence this adapation . looks  really good on a layout and guaranteed to work every lap . thanks ray  post recorded royal mail well padded .