Ferei W172II LED Scuba Diving Flashlights

SPECS:

LED: 1 X CREE XP-L HI 54WATT

Temperature

1.Version CW: (Cool White ): Output: 6000 Lumens ,Beam Color: Cool White,Color Temperature: 5000K-6800K,Luminous Intensity: 160,000 CD,Beam Distance: 800 M

2.Version NW: (Neutral White ): Output: 5600 Lumens,Beam Color: Neutral White,Color Temperature: 3750K-5000K,Luminous Intensity: 150544 CD,Beam Distance: 720 M

Runtime (indoor static testing at 28°C): 2.50 hours
Battery: 6 * 18650 Li-ion batteries.
Recharge time : 5 hours
Beam Distance: 800 M
Operating Temperature –Charge: 0 to 45°C
Discharge: -20 to 45°C
Storage temperature: -20 to 25°C
Length: 158mm
Head diameter: 87.5mm
Body Diameter: 65mm
Weight: 1197 g(including batteries)
Beam Angle: 10 °
Underwater weight: 634g
Diving Depth: 150 – 200 Meters

LIGHT FUNCTION

- Blazing Brightness for Deep Exploration ——powerful output of 6000 lumens and an intense beam reaching up to 800 meters, this dive light cuts through darkness and murky waters, delivering crystal-clear visibility even at depths of 200 meters
- Precision Illumination with 10° Beam Angle——Featuring a focused 10° beam angle and 160,000 candela intensity, this light provides a tight, long-range beam ideal for underwater navigation, search missions, and detailed inspections
- Extended Reach for Professional Divers -—— Engineered with a high-luminous intensity of 160,000 CD and an 800-meter beam distance, it ensures superior visibility in deep-sea environments, making it an essential tool for technical and professional divers
- Three levels of brightness: high – medium – and low

SAFEGUARD

Designed for professional divers and underwater explorers, FEREI W172 diving light delivers powerful, reliable illumination in the most challenging underwater conditions. With a waterproof rating of up to 200 meters, it ensures safe and clear visibility in deep-sea environments. The intelligent thermal and battery protection system prevents overheating and power failure during critical missions, while the magnetic switch offers smooth, waterproof control, even in cold or low-visibility conditions. Built with a durable, anti-corrosion aluminum body, it withstands harsh marine environments, providing long-term dependability. The integrated low-battery warning and emergency signal flash mode enhance diver safety, making this light an essential tool for technical diving, underwater rescue, and night-time marine operations.

FEATURE

1.Water resistant portable high-intensity LED search light;
2. Light source consists of 6 CREE XM-L2 LEDs with a brightness of up to 6000 lumens;
3. Submersible (suitable for underwater lighting or shooting) with an IPX8 waterproof grade, and diving depthup to 150 meters;
4.Suitable for outdoor lighting: mountains,fields, ships, piers, etc.
5. Made from aviation-grade aluminum with a hard-anodized,surface hardness up to military level three,surface is processed with an anti-wear treatment method,making it resistant to seawater corrosion;
6. Frame is processed with solid aluminum alloy CNC with large areas of leaf-shaped heat sinks that are able to dissipate the heat from LEDs quickly and efficiently, extending the LEDs’ life;
7. Streamlined handle is processed with solid aluminum alloy CNC,making it comfortable and exquisite;
8. The handle is equipped with 1/4 inch screw holes with a wide application, the light can be installed on the camera tripod or other bracket directly for lighting purposes. In addition , there is a dedicated Gopro mounting hole, through which, the Gopro camera equipment can be fixed on the handle with Ferei’s dedicated adapter;
9.The front and rear end of the handle are equipped with mounting holes that can be used to mount straps or hand ropes easily and quickly;
10.The aluminum alloy reflector laminates the alloy reflective film with an ultra-high temperature treatment method to get better luminous effectiveness and focus, as well as a longer illumination distance;
11.The light can be inverted on a table the handle can also be placed downward directly as a light support bracket for lighting purposes;
12.There is a direct charging hole on the end of the light that can be charged by directly connecting to the 110V-220V dedicated charger or DC12V car charger by opening the charging cover with the edge of a coin;
13.6 built-in 18650 rechargeable lithium batteries with protective board can be charged repeatedly for safe and energy-efficient use;
14. The torch is equipped with an intelligent circuit,temperature-control system, overcharge and over discharge protection for battery ;
15.There is a magnetically controlled switch on the end to turn on/off the light or adjust the brightness; 16.Switch equipped with a drain hole to quickly drain water to prevent freezing in low temperatures; 17. Three levels of brightness:high – medium – and low;
18. A blinking signal mode and a low battery warning mode .

Special functions

The handle is equipped with 1/4 inch screw holes with a wide application, the light can be installed on the camera tripod or other bracket directly for lighting purposes. In addition, there is a dedicated GoPro mounting hole, through which, the GoPro camera equipment can be fixed on the handle with Ferei’s dedicated adapter
Integrated 1/4″-20 thread and GoPro mount allow quick attachment to tripods, camera rigs, or accessories—perfect for hands-free underwater or field video lighting
The front and rear end of the handle are equipped with mounting holes that can be used to mount straps or hand ropes easily and quickly. Front and rear M6 mounting points enable fast attachment of safety lanyards or wrist straps, preventing loss during diving or marine operations
Red light: Helps to maintain night vision in the dark

Height and Weight

Length: 158mm
Head diameter: 87.5mm
Body Diameter: 65mm
Weight: 1197 g(including batteries)
Underwater weight: 634g

IP-CLASS

IPX8

Patented Smart Temperature Control Technology

This product is designed with and uses a temperature control circuit device. LED is a heat-generating component sensitive to temperature, especially high-power, high-brightness LEDs, which are prone to damage or reduced lifespan due to excessive heat. FeRei uses an intelligent temperature control design, measuring the temperature of the LED chip. Due to the different structures of the lamp, the thermal conductivity varies. Generally, the surface temperature of the lamp is maintained between 50 and 60 degrees. When the set temperature is exceeded, the intelligent circuit drive of the lamp will automatically reduce the power to achieve cooling, during which the brightness of the lamp will also decrease. When the temperature drops (if the battery is sufficiently charged), the power will gradually increase, and so will the brightness; the process of increasing brightness is relatively smooth, avoiding flicker.
This temperature control cycle effectively ensures user safety and extends the lamp’s lifespan. Under good air cooling conditions (low temperature or windy environments), the brightness of the lamp will not decrease even in high brightness mode. The lamp does not have a preset activation time for temperature control; it operates based on real-time temperature measurements, thus the actual illumination time depends on how the temperature control affects battery discharge, which may be slightly longer or shorter than the experimentally provided illumination time.

Battery and Casing

Battery: 6 * 18650 Li-ion batteries.

What’s in the box

W172II Full Kit Includes:

W172II Light,
AC400 Charger,
DC13 Car Charger,
Buckle strap/belt
Lanyard,
6 x 18650 Panasonic Batteries with PCB ,
Mount adapter ,
3 x screws .
Packed in professional bag together with Warranty Card and Instruction Manual.

Energy Management

6 built-in 18650 rechargeable lithium batteries with protective board can be charged repeatedly for safe and energy-efficient use
There is a direct charging hole on the end of the light that can be charged by directly connecting to the 110V-220V dedicated charger or DC12V car charger by opening the charging cover with the edge of a coin
A blinking signal mode and a low battery warning mode*

Rechargeable

Did you know that conventional, disposable batteries can require up to 500 times more electricity to produce than they can release? By opting for rechargeable batteries, not only are you saving money in the long-run by reusing the same batteries, but you’re no longer throwing disposables away, which is a plus for Mother Earth.

FEREI W172II LED SCUBA DIVING FLASHLIGHTS USER MANUAL

Manual Download

Operating Instructions

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Frequently Asked Questions

Compatible Accessories

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SHOP ALL

Disruptive Innovators

FEREI is a Chinese company founded by outdoor adventurers. Driven by a passion for LED technology, we illuminate the darkest outdoor environments for explorers

Meticulously Designed

Rooted in advanced engineering, our design philosophy is driven by precision, durability, and a relentless focus on the consumer — crafting products that perform, endure, and evolve with your needs

Ready and Able

Be prepared for the darkest environments — whether at work, off-road, or in the underwater. Stay empowered with reliable lighting that enables you to tackle the unexpected and explore beyond the limits of daylight.

Temperature	Cool White, Neutral White
Unit	Kits, Single Light Only

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LITHIUM ION BATTERY

battery casing

CHARGER

FILTER