We got the chance to review this great little light and found it to be all it's cracked up to be. See the full review below if you are interested.
http://www.thespearfishingacademy.com/2013/10/21/underwtaer-kinetics-mini-q40-light-review/
http://www.thespearfishingacademy.com/2013/10/21/underwtaer-kinetics-mini-q40-light-review/