Comments about Underwater Kinetics Underwater Kinetics Sunlight SL4 Dive Light:
This is a nice compact light. The flat shape fits easily into your BCD pocket. The beam is tighter than my Princeton Tec 400 and it is maybe just a bit brighter. It is easier to get in and out of my BCD pocket than the Princeton. My wife really likes the size and weight too. The slightly lighter weight makes it a good choice for traveling. The batteries are a little tricky getting in, but no worse than my NiteRider dive light. I would prefer that it had a magnetic switch, although the mechanical switch seems rugged enough. The switch placement on the front of the light make it a little awkward to use at first until you get used to it. It is bright enough to be used as a primary dive light in clear water or as a good backup in lower vis diving. It would probably be adequate as a third or forth backup light for overhead environment diving too. It's size also makes it a great light for using on daytime dives when you want to look under a dark ledge to see who's hiding or those late afternoon dives that almost turn into night dives. If you are traveling, I would recommend buying a spare bulb to take with you. This light gets pretty warm out of the water. If you travel with it, pack the batteries separately so it will not turn on accidentally in your dive bag and cause a problem. You can also find a good LED replacement bulb on one of those famous (infamous?) online auction sites that is a lot brighter than the OEM bulb. Typical rugged and reliable UK quality. This light offers a very good value.[...].