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Underwater Kinetics

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Underwater Kinetics Mini Q40 eLED Plus Dive Light Black

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About Underwater Kinetics Mini Q40 eLED Plus Dive Light

Lobster diving or photography can really get your hands full. How do I keep light on my subject or that five pound lobster with either my camera or game bag or hunting tools in hand? The high-intensity Mini Q40 eLED Plus is lightweight enough to attach to your mask strap for hands-free illumination of camera settings, hunting, gauges and close-up marine life. It outshines many lights three times its size. Light comes equipped with a mask strap attachment and 2 watt high brightness eLED lamp. Works well as a photographers spotting light. MiniQ40 Light fits Sea & Sea, Ultra-Light and other camera mounting adapters. All this versatility in a tough ABS polycarbonate body with rubber shock resistant bezel cover makes the Mini Q40 the light for you.

This unique light produces 77 lumens f brightness with the single eLED lamp with a beam distance of 328' (100 meters) on land. The light is powered by 4 AA alkaline batteries (included) with a burn time of 4 to 5 hours. With optional lithium batteries the light will get a burn time of 9 to 10 hours. The Mini Q40 Light measures 6.5" x 1.6" x 1.4" (16.51 x 4.06 x 3.56 cm) and weighs 6oz (170.1g). Light is depth rated to 500' (152.4 meters), is available in multiple colors, comes with an owner's manual, is proudly made in the USA and is covered by a limited lifetime warranty.

The Underwater Kinetics Mini Q40 eLED Plus Dive Light is commonly used for Cave Diving, Close-Up Viewing, Night Diving, Professional, Recreational, Safety Backup and more. The Underwater Kinetics Mini Q40 eLED Plus Dive Light is most used by customers who consider themselves to be a Advanced, Advanced Diver, Beginner, Casual/ Recreational, Divemaster, Professional, Recreational Diver among others. The Underwater Kinetics Mini Q40 eLED Plus Dive Light is popular because customers like the following qualities of the Underwater Kinetics Mini Q40 eLED Plus Dive Light: Compact, High Intensity, Long Bulb Life, Reliable, Well-Focused.

Warranty Information

This product has a limited lifetime warranty.


Underwater Kinetics Mini Q40 eLED Plus Dive Light Features

  • Underwater Kinetics Mini Q40 eLED Plus Dive Light
  • Great Light for:
    Lobster Hunting at Night
    Spotting Photography Light
    Hands-Free Illumination
    Includes Mask Strap Attachment
  • Lumens: 77 of Brightness
  • Power: 4 x AA Alkaline Batteries (included)
  • Burn Time (Alkaline Batteries): 4 to 5 Hours
  • Burn Time (Optional Lithium/L91): 9 to 10 Hours
  • Beam Distance: 328' (100 meters) On Land
  • Fits Sea & Sea, Ultra-Light and Other Camera Mounting Adapters
  • 2 Watt High Brightness eLED Lamp
  • Tough ABS Polycarbonate Body
  • Rubber Shock Resistant Bezel Cover
  • Dimensions: 6.5" x 1.6" x 1.4" (16.51 x 4.06 x 3.56 cm)
  • Weight: 6oz (170.1g)
  • Depth Rating: 500' (152.4 meters)
  • Owner's Manual
  • Proudly Made in the USA
  • Limited Lifetime Warranty

Underwater Kinetics Mini Q40 eLED Plus Dive Light Customer Reviews Powered by TurnTo®

Review Summary


(based on 101 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


Can't live without

When Q40 introduced I bought three of them. I loved the idea to have continuously a light wherever you look on. Then Underwater Kinetics introduced the eLed plus and I bought one of these Just to check it.There was no comparison between the two except the casing.As result I sold my Three previews Q40.


Most Liked Negative Review


O-Ring Placement

i had a problem getting the O-ring in place at the beginning. After a little trial and error, it now seats everytime.

Reviewed by 101 customers

Displaying reviews 1-5

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good primary, bright, saves battery


from Monterey Bay, CA, US

this light is small, but it's pretty bright. I use it as my primary and every time I go night fishing and need a reliable waterproof light, this is my go-to. It is not superbly bright, but you don't want it to be blinding, it is great how it is. The light diffuses, no sharp edges like other lights that form perfect circles. Twist on and off is very easy to use and reliable. Takes 4 AA batteries and burns for 5-6 hours. It's really reliable and goes through the batteries very slowly, very long-lasting. Definitely recommended. Great light! Get 4 rechargeable AA and you're set! I tried using the strap, and it doesn't work for me, so don't count on it. I just hook a camera strap to the back and it goes around my wrist.


Seems rugged and of good quality


from Monroe, GA, US

I haven't tested it in water, but, I especially like the strap that allows you to attach the light to one side of your mask strap. Hands free is a nice option and always best for night dives. It twists on and off and that should reduce the chances of a button malfunctioning.


great light


from Birmingham, MI, US

Great light fits into my BCD pocket. Bright and steady beam.


Worked for 1 day...


from Hudson, MA, US

It worked great for 2 dives and then the 1st dive the next day it no longer worked. When I got home from the trip I went to replace the batteries and the inside was all corroded and damp.


Head light


from San Antonio, TX, US

With my new head light everyone knows that I'm coming. My dive partner took a picture of me in some murky water and could see me with no problem. I could not feel it on my OTS full face mask but could see the beam. It makes looking at my gauges a lot easier and hands free.

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Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  Why Did You Choose This?
phillip f  my last Q40 lasted over 20 years of diving, bad battery leak finally did it in. Can't rate this product and leasure pro service high enough.
ALEX H  Perfect size, plenty of light to check under the ledges
LARRY L  This is a great backup light for night dives and on day dives to peek into the shadows.
KIMBERLY D  Great value. Small and excellent brightness.
MYLES M  it flooded
CHUCK C  Don't remember purchasing this item. Currently do not have it in my equipment inventory.
SANDY R  small, works well, dependable
MAKANI N  Have been using UK lites for years, great quality.
GREG B  Thought I could use it on my camera as a spotting light. Good idea but it didn't really work out how I had hoped.
ALLEN S  Strapping this light to one's mask gives immediate access to emergency lighting when one's primary conks out.
BRIAN C  works very well for free diving
TOM M  Really small and easy to fit in BC pocket for an emergency.
PHILIP P  I keep this in my BC pocket as an emergency light. It has a mask strap but it really isn't of any use as you can't wear it on your mask at night without blinding your buddy.
GEORGE M  bright compact handy light no hands needed makes it nice when you have to grab the lobster or pry that trophy abalone
FRANK J  Lost previous one. I ALWAYS keep a light with me. Never know when it might be needed.
COLETTE W  Wear it on my AGA mask, as a backup light.
DANNY C  A bright little tough flashlight, very easy to carry. I use rechargeable NiMh batteries, and it stays bright for at least 2-3 hours continous use.
Judy C  does this light turn on by a twist or push button?
PHILIP H  It turns on by fully twisting closed and opens by loosening. It requires many turns after shutting off to affect water ingress. Easy to do and no accidental turning on.
GARY R  You must twist the top for the light to be activated.
JEFFERY E  Twist. No focus just wide beam.
MIKE M  Twist, puts out good light for it's size. I have mine mounted to my speargun for hunting rock fish.
CORY K  Twisting the bulb holder.
ROBERT J  you have to twist it to turn it on. their is no buttons. it is very reliable though. I've had this flash light for over 6 years and it still works.
ROBERT M  Twist the head
STEVEN H  THis light turns on by twisting the bulb side cap and off by twisting it back. I have never had any problems with it. I do make sure to keep the o ring lubed.
Robert S  What is the battery layout for the MiniQ40 Eled?
Frank L  4 AA's, stacked in two rows.
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