Looking to light up your favourite caver's life this Christmas? I have a brand new Flexitwin V5 from Bisun for sale - never been out of its packaging. This is an insert for Petzl Duo headlamps giving a max output of 500 lumens.

Full specs here: http://www.bisun.co.uk/flexitwinv5_main.html

Photos of my one available on request.

They retail for ?70 inc postage; I'm after ?60. I could do caver post (to the RGS event at the weekend?) or actual post, but please note I'll be away all next week so can't post then.