Halcyon Primary Dive Light
Halcyon 50,000 Lux Phaser Dive Light
Focused primary-light performance in a self-contained, canister-free design with 50,000 lux at 1 meter, USB-C charging, and useful reverse-charging capability.
The Halcyon Phaser is a high-intensity handheld primary dive light built for divers who want a strong, focused beam without committing to a separate battery canister and cable. Its concentrated beam is particularly useful for night diving, wreck and overhead-environment communication, low-visibility diving, and photographers who want a dedicated primary torch separate from their camera lighting.
The big advantage is simplicity: the battery, light head, tactile controls, folding hand mount, USB-C charging, and power-bank capability are all incorporated into one compact system.
- Best for: serious recreational, night, wreck, cave, technical, and exploration-oriented diving where a focused primary light is preferred.
- Main advantage: 50,000 lux at 1 meter with no external canister or light cable to route through your dive configuration.
- Camera compatibility: independent of your camera and housing, so it can be carried alongside virtually any underwater photo or video system.
- Major differentiator: the 29 Wh battery can also reverse-charge compatible USB-C dive equipment and personal electronics.
- Travel benefit: a dedicated mechanical travel lock helps reduce the chance of accidental activation in transit.
- Tradeoff: this is a focused dive light, not a wide, even video light for illuminating an entire underwater scene.
Halcyon Phaser Quick Specs
Compatibility: What Does the Halcyon Phaser Work With?
Unlike a strobe, video light remote, or focus light tied to a camera housing, the Phaser is a standalone primary dive light. It does not need to communicate electronically with your camera, housing, lens, port, or strobe system.
Works With
- Recreational and technical scuba configurations
- Backmount and sidemount dive systems
- Virtually any underwater camera or housing system when used as a separate primary dive light
- Compatible USB-C devices for reverse charging
Requires
- A charged Phaser battery before entering the water
- Compatible USB-C charging equipment for recharging
- A backup light when required by your training, dive plan, or overhead-environment procedures
Optional Gear
- Compact backup dive light
- Additional retention or clipping solution appropriate to your configuration
- Dedicated wide-beam video lights if shooting underwater video
- USB-C cables for compatible computers or electronics you plan to reverse-charge
Focused Illumination
A Beam Designed to Reach, Signal, and Communicate
At 50,000 lux at one meter and 6,000 lux at three meters, the Phaser is designed around concentrated usable intensity rather than broad scene coverage. Underwater, that makes it easier to use the light as both an illumination tool and a communication tool.
- Strong central beam for signaling dive teammates
- Useful for looking into wrecks, caves, ledges, and dark reef structure
- High and low settings let you balance intensity against runtime
- Better suited to navigation and signaling than wide-angle video lighting
Underwater Control
Simple Controls You Can Operate by Feel
Complicated button sequences are rarely helpful on a dark dive. The Phaser uses a rotating ring control with distinct positions for High, Low, and Off, making basic operation easy to understand without navigating multiple menus. A tactile magnetic ring switch provides direct access to high, low, and off settings, even while wearing gloves. The rear-facing indicator shows the remaining battery level without distracting, repeated flashes, while the travel lock helps prevent accidental activation during transport.
- Tactile rotating-ring operation
- Rear-facing color-coded battery-status indicator
- Mechanical travel lock helps prevent accidental activation
- Folding Goodman-style hand mount keeps the light usable while freeing your fingers
Power Beyond the Dive
USB-C Charging Plus an Emergency Power Source
USB-C makes the Phaser easier to integrate into a modern travel-charging kit, while reverse charging allows its 29 Wh battery to supply power to compatible USB-C electronics between dives.
- Recharge through USB-C
- Reverse-charge compatible dive equipment
- Useful for phones and other compatible USB-C devices while traveling
- Reduces the need to carry a dedicated emergency power bank for every situation
Shop Related Dive & Underwater Lighting Gear
Dive Light Guides & Expert Advice
Halcyon Phaser Technical Specifications
Lighting
- Output: 50,000 lux at 1 m
- Output at distance: 6,000 lux at 3 m
- Beam type: Focused central spot with surrounding illumination
- Beam angle: TBC
- Modes: High / Low / Off
- Power draw: Approx. 14 W High / 5 W Low
Battery & Power
- Battery: Rechargeable Li-ion
- Capacity: 2.6 Ah / 29 Wh
- High runtime: 2+ hours calculated
- Low runtime: Approx. 6 hours calculated
- Charging: USB-C
- Reverse charging: Compatible USB-C devices
Build & Environmental
- Depth rating: 150 m / 490 ft
- Weight: Approx. 0.82 kg / 1.80 lb
- Maximum dimensions: 25.4 × 6.2 × 13 cm
- Maximum dimensions: 10 × 2.4 × 5.1 in
- Water operating temperature: 4°C–40°C / 39°F–104°F
- Travel protection: Mechanical activation lock
Controls & Compatibility
- Control: Rotating tactile ring
- Battery indicator: Rear-facing, color-coded status indicator
- Hand mount: Folding Goodman-style configuration
- Camera connection required: No
- Halcyon Phaser Light
- 29 Wh Rechargeable Battery
Halcyon Phaser Dive Light FAQ
Is the Halcyon Phaser a video light?
Not primarily. The Phaser is designed around a concentrated primary-dive-light beam, while underwater video generally benefits from a much wider and more even beam with minimal hotspotting.
How bright is the Halcyon Phaser?
Halcyon rates the Phaser at 50,000 lux at one meter and 6,000 lux at three meters. Because lux and lumens measure different things, this figure should not be directly converted into a lumen rating without the full beam geometry.
How long does the Halcyon Phaser battery last?
Calculated runtime is approximately six hours on Low and more than two hours on High. Actual dive runtime can vary with operating conditions and battery state.
Can I use the Phaser with my underwater camera housing?
Yes, because the Phaser operates independently of the camera and housing. It is normally used as your dive, navigation, or signaling light rather than as an electronically connected camera light.
Can the Phaser charge other devices?
Yes. Its 29 Wh battery supports reverse charging for compatible USB-C dive equipment and personal electronics.
How deep can I take the Halcyon Phaser?
The Phaser is rated to 150 meters / 490 feet. Your complete dive configuration and training must, of course, also be appropriate for the planned depth and environment.
What should I check if my Phaser will not turn on?
First check the battery status and confirm that the mechanical travel lock is disengaged. If the light still does not operate, follow Halcyon's troubleshooting instructions or contact Bluewater Photo for support rather than attempting an unauthorized repair.
How should I maintain the Phaser after saltwater diving?
Rinse the exterior thoroughly with fresh water after saltwater use and allow the light to dry before storage or charging. Follow Halcyon's manual for any charging-port, seal, battery, or service procedures.
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