Halcyon Phaser Dive Light: Focused Power for Demanding Dives

A reliable dive light is an important part of underwater equipment, particularly when visibility, communication and effective illumination matter. Whether exploring overhead environments or diving in conditions where additional light is needed, having a light that combines performance with straightforward operation can make a difference. The Halcyon Phaser dive light brings together concentrated illumination, a compact design and a rechargeable battery with an additional power bank function.

Designed by Halcyon, the Phaser is a primary dive light featuring two power settings, a rotating ring switch and a colour-coded battery indicator. It also introduces a useful extra: the ability to reverse-charge compatible electronic devices through its USB-C connection.

But what exactly does the Phaser offer, and what makes its design interesting? Let's take a closer look at its features, performance figures and technical specifications.

The Halcyon Phaser is a primary dive light designed around a simple idea: delivering a concentrated, high-intensity beam in a compact and practical format.

Its illumination is rated at 50,000 lux at one metre and 6,000 lux at three metres. These figures give an indication of the concentrated output the light is designed to deliver, with Halcyon positioning it for demanding underwater environments.

Rather than relying on a complicated control arrangement, the Phaser uses a rotating ring switch with distinct clicks. This allows divers to select between High, Low and Off, providing a straightforward way to adjust the light's output.

There are several features that distinguish the Phaser from a conventional rechargeable dive light:

• A concentrated beam delivering 50,000 lux at one metre.

• Two power settings to adjust illumination.

• A rotating ring switch with tactile clicks.

• A rechargeable 29 Wh lithium-ion battery.

• USB-C charging.

• Reverse-charging functionality for compatible devices.

• A rear-facing, colour-coded battery indicator.

• A mechanical travel lock.

• A tested depth rating of 150 metres.

These features combine illumination, battery management and charging functionality in one compact unit.

The Phaser's main purpose is to provide powerful, focused illumination. Halcyon specifies an output of 50,000 lux at one metre and 6,000 lux at three metres.

Lux is a measurement of illuminance: the amount of light falling on a given surface. The manufacturer's figures describe the light's measured illumination at specific distances rather than a lumen output.

This distinction is worth understanding when comparing dive lights. Lux and lumens measure different things, so the two figures should not be treated as interchangeable.

For divers, the Phaser's concentrated beam is intended to support clear, effective communication and provide illumination in demanding underwater environments.

Having a focused beam is particularly relevant to the light's role as a primary dive light, where controlled illumination is an important part of its intended purpose.

Not every situation requires the same level of illumination. The Phaser addresses this with two selectable power settings: High and Low.

The rotating ring switch makes changing between them straightforward, with distinct clicks for each position.

The manufacturer's technical specifications list the following power consumption:

• Low: approximately 5 W.

• High: approximately 14 W.

The two settings also have different calculated runtimes:

• Low: approximately 6 hours.

• High: more than 2 hours.

The ability to choose between two output levels gives divers some flexibility in how they use the available battery capacity, depending on the illumination they require.

One of the more interesting features of the Phaser is that its battery does more than power the light. The handheld version features a rechargeable lithium-ion battery rated at 2.6 Ah and 29 Wh. Through its USB-C connection, the battery can also be used as a power bank to charge compatible electronic devices.

Halcyon specifically mentions the ability to charge:

• A compatible Symbios computer.

• A Symbios CCR.

• A mobile phone.

• Other compatible equipment and personal devices.

This reverse-charging functionality gives the Phaser an additional purpose beyond underwater illumination. For divers carrying electronic equipment, having a battery that can also provide power to compatible devices is a useful extra to consider.

Knowing how much battery remains is an important part of managing rechargeable equipment. The Phaser features a rear-facing, colour-coded battery indicator that displays the remaining charge. This gives the diver a way to check battery status on demand without relying solely on an estimate of how long the light has been in use.

The indicator is integrated into the rear of the light, alongside the other features of its design. Having battery status readily available makes it easier to keep track of the light's remaining charge and plan recharging accordingly.

The Phaser uses a rotating ring switch with distinct clicks to select High, Low and Off.

Another practical feature is the dedicated mechanical travel lock. Its purpose is to help prevent accidental activation during transport. This is particularly relevant when packing and carrying equipment between dives, as the lock provides an additional safeguard against the light being switched on unintentionally.

The combination of tactile controls and a mechanical lock keeps the operating arrangement simple, while addressing both everyday use and transportation.

The Halcyon Phaser has a stated depth rating of 150 metres (490 feet). This is an important technical specification for divers considering the light for more demanding diving environments.

The Phaser is positioned as a primary dive light, with a combination of concentrated illumination, adjustable output and a depth rating of 150 metres. Its feature set will be particularly interesting to divers looking for a light that combines several functions without making operation unnecessarily complicated.

Some of the features worth considering include:

• Divers looking for a primary light: The concentrated beam and high-intensity output are central to the Phaser's design.

• Technical divers: Its stated 150-metre depth rating and focused illumination are relevant specifications for divers considering equipment for demanding underwater environments.

• Divers carrying electronic equipment: Reverse charging provides an additional function for compatible computers, phones and other devices.

• Divers who value straightforward controls: The rotating ring switch offers distinct High, Low and Off positions.

• Travelling divers: The dedicated mechanical travel lock helps prevent accidental activation during transport.

Ultimately, whether the Phaser is the right choice depends on the requirements of your diving, the type of illumination you need and the equipment you intend to power.