Marelux Artemis 9000 lumen underwater video light for professional underwater photography and video

Marelux Artemis 9000lm Underwater Video Light

Name: Marelux Artemis 9000lm Underwater Video Light
Brand: Marelux

A high-output 9,000-lumen, CRI 95 video light with a wide 120° beam, stepless control, replaceable batteries, and optional remote power adjustment for serious underwater lighting setups.

Marelux Artemis 9000

The Marelux Artemis 9000 is a 9,000-lumen underwater video light built around three things experienced shooters actually notice underwater: broad 120° coverage, CRI 95 color rendering, and fast control over light intensity. It can operate as a conventional camera-mounted video light or become part of Marelux's optional encrypted optical remote system for off-camera and multi-light work.

We see the biggest advantage on wide-angle reef scenes, wrecks, caves, larger subjects, and staged lighting where you may want a light several meters away from the housing. The Smart Target Light function also makes the Artemis useful on hybrid still/video rigs by briefly switching the continuous light off when it receives the camera's optical flash signal.

Best for: high-output underwater video, wide-angle reef shooting, wreck and cave work, hybrid still/video systems, and creative off-camera lighting.
Main advantage: 9,000 lumens, CRI 95, a wide 120° beam, and stepless local brightness adjustment in one light.
Compatibility: camera-independent as a continuous light; your main setup questions are mounting hardware, batteries, and whether your housing can provide the optical signal required for Smart Target Light mode.
Major differentiator: optional 5-level encrypted optical remote control lets you adjust remotely positioned lights without a conventional control cable when optical line-of-sight is available.
Runtime: approximately 80 minutes at full output using four 5000mAh 21700 batteries.
Tradeoff: the light weighs 246 g underwater with four 21700 cells and ball mount, the remote system is optional, and the battery chamber uses plastic rather than an all-aluminum construction.

Why buy it from Bluewater Photo? We can help confirm the complete housing, mounting, fiber-optic, battery, arm, and remote-control configuration instead of leaving you to determine system compatibility from a specification sheet.

Quick Specs

Maximum Output 9,000 lumens

Beam Angle 120°

Color Rendering CRI 95

Color Temperature5500K

Depth Rating 100 m / 328 ft

Primary Battery Setup 4 × 21700 Li-ion

Full-Power Runtime 80 min with 5000mAh 21700 cells

Local Control Stepless rotary dial

Remote Control Optional 5-level encrypted optical control

Dry Weight 836 g with 4 × 21700

Underwater Weight 246 g with batteries + ball mount

Marelux Artemis 6000 underwater video light positioned for remote off-camera lighting

Remote Lighting That Actually Changes How You Can Position a Light

Fully Wireless Remote Control: The first completely wireless, remote-controlled underwater video light. Utilizing the Artemis 4500RMT 2.0, users can adjust power levels from 12 to 15 meters away underwater via built-in blue light emitters. Remote adjustment is crucial for creative lighting layouts, cave diving, and wreck diving. By eliminating cables, users can position multiple lights far from the camera housing, opening up endless possibilities for underwater photography.

Interference-Free Encrypted Signal: The remote control signal uses an internationally patented, encrypted optical frequency. It cannot be disrupted by strong sunlight, a dive buddy's strobes, or competing video lights. Only the dedicated encrypted blue light can adjust the brightness (from 0% to full power), ensuring absolute reliability in any environment.

Self-Synchronizing Encrypted Signals: Each of the 5 remote power levels emits a unique, independently encrypted signal. Even if a video light misses a signal change due to an obstruction, it will instantly synchronize with the very next signal it receives. This ensures that all multi-light setups stay perfectly balanced and synced at the exact same power level.

CRI 95, 5000K Light With a Wide 120° Beam

Lumens tell you how much light is being produced; they do not tell you whether a red sponge, orange anthias, or diver's skin tone will reproduce well on camera. The Artemis uses a COB LED rated at CRI 95 and 5000K, which is the specification we pay attention to when accurate color matters as much as raw brightness.

120° coverage is suited to wide underwater scenes and close working distances
CRI 95 is a strong specification for color-sensitive photo and video work
5500K output provides a neutral daylight-oriented starting point for white balance
Stepless analog control lets you trim exposure without cycling through fixed brightness increments

Wide 120 degree beam from the Marelux Artemis 6000 underwater video light

Marelux Artemis 6000 video light mounted on an underwater camera arm

Built for Divers Who Switch Between Stills and Video

In Smart Target Light mode, an optical flash signal sent from the housing through a standard fiber-optic cable tells the Artemis to switch off for 0.2 seconds, then come back on. That is useful when you want continuous light for composing and focusing but do not want it contributing unwanted exposure while a Marelux strobe or another compatible strobe lights the still image.

Continuous light remains available for focusing and subject acquisition
Temporary light shutoff helps keep the video light out of a strobe exposure
Two ball-mount positions allow the control dial orientation to suit different arm positions
User-replaceable 18650/21700 cell options reduce dependence on a single proprietary battery pack

Ultra-Compact Sensor Dome: The remote receiver's sensor dome is minimized, ruggedized, and safely integrated into the housing.
Fiber Optic Remote Capability: Marelux also offers an optional fiber optic remote control connection. Using a specially designed fiber optic cable with custom caps on both ends, you can link the receiver port directly to the emitting dome. This allows the Artemis 4500RMT 2.0 to control the light even when it is hidden behind rocks or reefs where the wireless signal would be blocked.
Streamlined 5-Stop Remote Adjustments: The remote control features exactly 5 power levels. When using a remote, divers need to make adjustments instantly. The most critical actions are turning the light on/off and switching to key power levels in a split second to catch fast-moving marine life. A shorter power cycle ensures lightning-fast operation.
Studio-Quality COB LED: Features a premium COB LED with a CRI of 95 and a color temperature of 5000K, accurately restoring the true, vibrant colors of your underwater subjects.
Smart Target Light (Flash Mode): This mode allows the Artemis to act as a focus/target light for still photography. When your camera shutter triggers, the flash signal travels via a standard fiber optic cable from the camera housing to the light's flash sensor port. Upon detecting the signal, the video light instantly shuts off for 0.2 seconds before automatically turning back on. This ensures the powerful light does not ruin your exposure or appear in the final photograph.
Stepless, Seamless Power Dial: The video light is equipped with a rugged, analog dial for seamless, stepless brightness adjustment. Unlike competitors that limit you to fixed increments, this allows you to fine-tune the illumination to the exact level required for your shot.
Dual Ball Mount Positions: To accommodate different shooting preferences, the light features two ball mount positions. If you mount the light directly on top of the housing or handles, you can position the dial facing up for easy access. If you hang the light from strobe arms, you can flip the orientation so the dial faces downward for effortless adjustment.
Innovative Hybrid Construction: The first high-power video light to feature a half-plastic body design. This significantly reduces manufacturing costs, allowing us to deliver a high-performance video light to the market at a fair and highly competitive price.
User-Replaceable Battery System: The first high-power video light that allows users to change batteries freely. Proprietary battery packs are a major pain point. Imagine diving on a remote island and your custom battery pack fails—you would have to wait weeks for a replacement shipment while standard batteries are everywhere around you. Built-in battery circuits add a risk of failure. We believe less is more: keeping your power supply simple, reliable, and accessible.
Robust and Simplified Locking Mechanism: The battery chamber utilizes a straightforward, highly reliable locking system. For frequently used mechanisms, simplicity outperforms complexity. A rugged 6mm screw is the most dependable way to prevent mechanical failure underwater

Marelux Artemis 9000 vs. Other High-Output Underwater Video Lights

These lights overlap in output and wide-angle use, but they solve different problems. The Artemis is particularly compelling for shooters who want high CRI, long full-output runtime, standard replaceable cells, and Marelux's optical remote workflow; Kraken puts more emphasis on multi-color modes, while Keldan offers a deeper 200 m rating and its own professional remote ecosystem.

Product	Power / Output	Beam	Best Use	System Compatibility
Marelux Artemis 9000	9,000 lumens CRI 95	120°	High-CRI wide-angle video, longer full-power dives, hybrid still/video, remote off-camera lighting	Camera-independent continuous light; optional Marelux encrypted optical remote and fiber-optic remote path
Kraken Hydra 10000 WRGBU	10,000 lumens CRI approx. 90	120°	Shooters wanting white, red, green, blue, and UV lighting plus burst/strobe functionality	Camera-independent; standard lighting mounts, fiber-optic burst support, and optional Kraken remote
Keldan Video 4XR 11000 CRI 86	11,000 lumens CRI 86	110° underwater	Professional video, 200 m-rated diving, compact premium rigs, and Keldan remote-control systems	Camera-independent; standard ball-mount systems and Keldan RC1 / RC2 remote compatibility

Comparison advice: do not choose by lumen output alone. Beam shape, color quality, runtime, buoyancy, control system, depth rating, and the type of video you actually shoot can matter more underwater than a 1,000–2,000 lumen difference on a specification sheet.

Recommended Accessories

Marelux Artemis 4500RMT 2.0: for remote optical power adjustment when the light is positioned away from the housing.
Fiber-optic remote-control cable: useful when a rock, reef structure, wreck bulkhead, or other obstruction blocks the optical wireless path.
Standard underwater fiber-optic cable: required if you want the Smart Target Light function to react to the camera's flash signal.
1-inch-ball arms and clamps: give you enough separation to control backscatter and position a wide video beam accurately.
Float arms: worth considering when balancing a dual-light housing system.
High-discharge 21700 or 18650 batteries: cells must meet the manufacturer's greater-than-10A continuous-discharge requirement.
Compatible lithium-ion charger: confirm cell size, chemistry, charging specifications, and travel requirements before ordering.
Second Artemis 9000: dual lights provide more flexible wide-angle coverage, allow stronger cross-lighting, and make it easier to manage shadows and backscatter.

Why Buy Marelux From Bluewater Photo?

Marelux has developed a broad underwater-imaging system that includes camera housings, strobes, video lights, optical controls and specialized accessories. With equipment this interconnected, getting the correct light is only part of the job; making sure the batteries, arms, fiber optics, housing and remote components work together is what turns a box of gear into a dependable dive system.

Bluewater Photo specializes in helping divers configure complete underwater camera systems, including compatibility questions that are difficult to solve from a specification sheet alone.

Content reviewed by Bluewater Photo staff, recognized as the #1 online retailer specializing in underwater photography and scuba diving equipment, with real-world experience supporting, selling, and configuring underwater camera systems.

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Marelux Artemis 9000 Specifications

Build

Main body: anodized aluminum alloy
Battery chamber: plastic
Diameter: 80 mm
Length: 170 mm
Dry weight with 4 × 21700 cells: 836 g
Underwater weight with 4 × 21700 cells and ball mount: 246 g
Battery-chamber locking mechanism: 6 mm screw

Lighting / Imaging

Maximum white-light output: 9,000 lumens
Beam angle: 120°
Color Rendering Index: CRI 95
Light source: COB LED
Color temperature: 5500K
Local brightness control: stepless rotary dial

Power

Published primary battery configuration: 4 × 21700 Li-ion
Required continuous discharge current: greater than 10A
Published runtime: 80 minutes at full power with 5000mAh 21700 cells
18650 compatibility via adapter stated by Marelux
Marelux states compatible cell lengths of 70–75 mm

Control & Compatibility

Depth rating: 100 m / 328 ft
Optional encrypted optical wireless power control
Remote controller: Artemis 4500RMT 2.0
Approximate remote distance: 12–15 m underwater
Remote brightness levels: 5
Optional direct fiber-optic remote-control connection
Smart Target Light optical flash-detection mode
Smart Target Light shutoff duration: 0.2 seconds
Dual ball-mount positions

Weight: 4.00 LBS

Dimensions: 12.00 (in) × 5.00 (in) × 6.00 (in)

Brand: Marelux

What's in the Box

1x 9000lm Video Light

For the inReach model: the watch has the same core hardware, with inReach connectivity features built into the watch.

Marelux Artemis 9000 Frequently Asked Questions

Will the Marelux Artemis 9000 work with my underwater housing?

In most cases, yes, because it is a camera-independent continuous light rather than a housing-specific electronic accessory. You still need compatible mounting hardware, and Smart Target Light operation requires an appropriate optical flash signal from the housing.

Do I need the Artemis 4500RMT 2.0 to use the Artemis 9000?

No. The Artemis 9000 can be operated directly with its stepless rotary control; the Artemis 4500RMT 2.0 is optional and adds remote optical power control.

How far away can I remotely control the Artemis 9000 underwater?

Marelux specifies an underwater remote-control range of approximately 12 to 15 meters using the Artemis 4500RMT 2.0. Because the system communicates optically, range and reliability depend on maintaining an usable signal path between the transmitter and light.

What happens if a rock or wreck wall blocks the wireless remote signal?

A solid obstruction can block the optical wireless signal. Marelux offers an optional fiber-optic remote connection for situations where the light needs to be hidden behind rock, reef, or wreck structure.

What batteries does the Marelux Artemis 9000 use?

The published Artemis 9000 specification uses four 21700 lithium-ion cells with continuous discharge current greater than 10A. Marelux also states that 18650 cells can be used with an adapter, but Bluewater Photo recommends confirming the exact 18650 configuration before ordering batteries.

How long will the Artemis 9000 run at full brightness?

Marelux specifies approximately 80 minutes at full output when using four 5000mAh 21700 batteries. Actual runtime can vary with battery condition, temperature, and operating conditions.

Can I use the Artemis 9000 as a focus light when shooting strobes?

Yes, using Smart Target Light mode and the appropriate fiber-optic connection from the housing. When the Artemis detects the optical flash signal, it switches off for 0.2 seconds and then automatically returns.

What should I check if the remote control is not responding underwater?

First confirm that the light is configured for remote operation and that the transmitter has a clear optical path to the receiver dome. If structure blocks the signal, reposition the light or use the optional fiber-optic remote connection.

How should I maintain the Artemis 9000 after a saltwater dive?

Rinse the exterior thoroughly with fresh water, dry the light before opening the battery chamber, and keep sealing surfaces free of salt, sand, hair, and debris. Inspect and maintain the O-rings according to Marelux instructions before the next dive.