Hey, i'm Looking for the smallest single cell 18650 HI CRI flashlight with a tail on/off button and would really like a lock out mode on it to. Right now I have a PD35vn Tac with a Samsung LH351D in it and I am always somehow turning it on in my pocket and after carrying it for 6 months everyday at work I find that it is too long for me. Is there anything out there like what I want that exists?