Just to resurect this old-ish thread. I now have a TIR5 and Trackclip Pro. I also hate the wire, so have bought this from eBay: http://www.ebay.co.uk/itm/120772528271?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1125wt_1064 Holds 2 x AAA batteries, built in switch and I'll simply attach...