First Impressions of Underwater Kinetics SL4 eLED MK2 Dive Light Yellow
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow isn’t just another underwater torch; it’s a legacy. Underwater Kinetics has built a reputation for rugged, reliable dive gear, and the SL4 eLED MK2 continues that tradition with its high-intensity LED, impressive beam distance, and signature yellow housing. This dive light promises to deliver powerful illumination in the depths, and I was eager to see if it lived up to the hype.
I needed a dependable primary dive light for wreck diving in the Great Lakes. Visibility can be challenging, and a powerful, focused beam is essential for penetrating the murk and navigating confined spaces.
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow arrived in a simple hang package, nothing fancy. The robust yellow polymer casing immediately gave me confidence in its durability, and the weight felt substantial, a reassuring sign of quality construction. Compared to some of the smaller, more streamlined dive lights I’ve used, the SL4 eLED MK2 felt like a serious piece of equipment. I also considered the Princeton Tec Torrent LED and the Scubapro Nova 850, but the Underwater Kinetics‘ reputation for longevity and the focused beam ultimately swayed me.
I was initially surprised by the size and weight, but after holding it and feeling the solid construction, I became excited to test its performance in the water. This light has a workhorse feel, and I anticipated it would prove to be a reliable tool in challenging conditions.
Real-World Testing: Putting Underwater Kinetics SL4 eLED MK2 Dive Light Yellow to the Test
First Use Experience
My first dive with the Underwater Kinetics SL4 eLED MK2 Dive Light Yellow was in Lake Huron, exploring a submerged schooner at a depth of 60 feet. The water was cold (45°F) and visibility was limited to about 10 feet.
The light performed exceptionally well, cutting through the murky water with its focused beam. The single-handed switching was easy to operate even with thick gloves, and the rubber sheath around the bezel did a great job of minimizing glare.
Extended Use & Reliability
After several months and over twenty dives, the Underwater Kinetics SL4 eLED MK2 Dive Light Yellow has proven to be a reliable companion. The polymer construction has held up well against scrapes and bumps, showing no signs of cracking or significant wear.
Maintaining the light is simple: rinsing it with fresh water after each dive and occasionally checking the O-rings. Compared to my previous dive light, which suffered from corrosion and finicky switches, the SL4 eLED MK2 feels like a significant upgrade in terms of durability and ease of maintenance.
Breaking Down the Features of Underwater Kinetics SL4 eLED MK2 Dive Light Yellow
Specifications
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow boasts impressive specifications for a light in its class. Its dimensions are 6.2″ x 1.7″ x 2.5″, and it weighs in at 15.2oz with batteries. It features a high-intensity white LED that produces 600 lumens and a beam distance of 817 meters.
These specifications translate to excellent underwater visibility and a powerful, focused beam capable of penetrating even turbid waters. The substantial beam distance is useful for spotting distant objects or navigating in open water.
Performance & Functionality
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow excels at its primary function: providing reliable underwater illumination. Its focused beam is perfect for cutting through murky water, allowing for clear visibility of wrecks, reefs, and marine life. The 6-hour runtime is adequate for most recreational dives, and the single-handed switching is easy to operate even with thick gloves.
The only minor drawback is the lack of adjustable beam width; however, the focused beam is generally ideal for the diving conditions I encounter. Overall, the SL4 eLED MK2 meets and exceeds my expectations for a primary dive light.
Design & Ergonomics
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow features a simple, functional design. The yellow polymer casing is highly visible, which is important in an emergency situation.
The light feels comfortable in hand, and the single-handed switching is intuitive. There’s no significant learning curve, making it easy to use even for novice divers.
Durability & Maintenance
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow is built to last. The rugged polymer construction can withstand the rigors of diving, and the sealed design protects the internal components from water damage.
Maintenance is straightforward: rinse with fresh water after each dive, check O-rings, and replace batteries as needed. With proper care, this light should provide years of reliable service.
Accessories and Customization Options
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow doesn’t offer many customization options, but its simplicity is part of its appeal. The included accessories are limited to the four C cell batteries required for operation.
While there are no specific accessories from Underwater Kinetics, the light is compatible with standard lanyards and wrist straps, which can be purchased separately. The absence of proprietary accessories keeps the cost down and simplifies maintenance.
Pros and Cons of Underwater Kinetics SL4 eLED MK2 Dive Light Yellow
Pros
- Extremely durable construction. This light is built to withstand harsh underwater conditions.
- Powerful, focused beam. Cuts through murky water for excellent visibility.
- Long runtime. Six hours of continuous use on a single set of batteries.
- Simple, reliable operation. Single-handed switching is easy to use with gloves.
- High visibility yellow casing. Easy to spot in an emergency.
Cons
- Lacks adjustable beam width.
- Relatively large and heavy compared to some newer models.
Who Should Buy Underwater Kinetics SL4 eLED MK2 Dive Light Yellow?
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow is perfect for recreational divers, wreck divers, and anyone who needs a reliable, high-performance dive light. It’s also well-suited for divers who prefer simple, rugged equipment over more complex, feature-rich options.
Divers prioritizing compact size or variable beam width might want to explore other options. A wrist lanyard is a must-have accessory to prevent accidental loss underwater.
Conclusion on Underwater Kinetics SL4 eLED MK2 Dive Light Yellow
The Underwater Kinetics SL4 eLED MK2 Dive Light Yellow is a proven performer that delivers reliable underwater illumination in a durable, easy-to-use package. At $125.00, the price is justified by its robust construction, powerful beam, and long runtime.
I would definitely recommend this light to any diver looking for a dependable primary light. If you want a no-frills, high-performance dive light that will last for years, the Underwater Kinetics SL4 eLED MK2 Dive Light Yellow is an excellent choice. Go ahead and dive in!