I have a almost new slimline 10 watt with a MR-11 head w/ 6 degree bulb. It only has about 4 dives on it, ond in fresh water only. I am selling for a customer, he dove with it and them changed his mind and bought the 21 watt. This light looks brand new!!!!!!!!! He will take $475.00 plus shipping (retail is $650.00) or you can pick it up here at Cave Adventurers. Email me at cabo@emeraldcst.com or call at (850)482-6016 Thanks, Edd