Had to post to rave about Lenser ( LEDCO ) Customer Service, as they are absolutely brilliant !!
Brought a Lenser H7R head torch in November, and it is a really great piece of kit. However, after using it all winter in all conditions, all was well, until a really dark night, when it did not work.... for no apparent reason . Not mistreated or anything, and fully charged up.... So sent it back to LEDCO this Tuesday just gone, and a brand new unit arrived in this mornings post - no questions.
Would recommend the H7R to anybody, but especially on the back of the LEDCO customer service. Very impressed.
All the best.