I just got a new Viking X yesterday and it wouldn't work straight out of the box. Well actually it will light up, but then it immediately starts flickering no matter the setting. Even the function that is the turbo setting alone, comes on bright and then immediately starts random flickering. Very disappointing, especially at this price point. If they are sending out lights that are worthless straight out of the box, I wonder how their QC will be in the future. I think for $100.00, the darn thing should put out some light as it's advertised. I've tried everything I know, changed sets of batteries out a couple of times and nothing helps. All settings go into random flickering within 2 to 5 seconds......that is if you can get it to change to that setting. I've notified Armytek. The sent an email saying they could send me a new head, but I haven't seen the new head of any indication that it has been sent. I also notified my retailer who has a great reputation. Haven't heard back. Hopefully this gets resolved soon, but it sure has left a bad taste in my mouth in regards to Armytek.