My local shop got some in and let me try them out,they are expensive but they will never burnout they recharge as soon as they leave the string and I tell you its absolutely awsome seening these things fly. and would make finding your arrow a dream as well as knowing exactly where the arrow hit you game because its always in you sights. if you can afford them get them you won't be disappointed.
http://www.cabelas.com/cabelas/en/te...424&hasJS=true