Sea & Sea LX-4000SW FS Underwater Video Light

No looseness in both wide and spot light "single light source/center light distribution" for a clean and beautiful image.

The uniquely developed new COB (LED arrangement) realizes the ideal "center light distribution" of a single light source for both wide and spotlighting.

The XL-4000SW emits light without fluctuation. It is an all-purpose light that provides optimum lighting in all scenes, including photography, wildlife observation, and night diving.

Center light distribution for both wide and spot

The light source is COB (LED), which has an established reputation for uniform light distribution. SEA&SEA's original design customizes the COB into a doughnut shape. The wide light source is placed in the doughnut, and the spot LEDs are placed in the center of the emitting surface, corresponding to the "hole" in the center of the light source. Whether wide or spot light, the optical axis is centered on the center of the light-emitting surface, ensuring optimum lighting at all times.

What is the new "COB"?

COB" is a type of LED. COB" is an abbreviation for "Chip on board," as the name suggests, multiple LED chips are placed directly on the board. Since multiple LED chips are arranged in a concentrated manner, high luminance is achieved. In addition, since the light is emitted from a surface, a large surface can be illuminated evenly. SEA&SEA is the first in Japan to lay out "COB" in a doughnut shape. Even with wide light, shadows are less likely to form in the center, resulting in uniform light.

Eliminate "multi-shadowing."

COB eliminates "multi-shadows" in both wide and spot lighting. The natural shadows bring out the subject clearly and sharply, making it ideal as a photographic light.

What is multi-shadow?

Shadows unique to LED lighting are different from sunlight when an object is illuminated by LED lighting that consists of multiple LED light-emitting chips. When an object is illuminated by LED lighting composed of numerous LED light-emitting chips, unnatural shadows (multiple shadows) are produced, different from those produced by sunlight. Multiple shadows can obscure the outline of an object and reduce its visibility. Single light source COB, a single light source, does not produce multiple shadows.

Various light intensity adjustment functions

Light Quantity Adjustment: Step dimming

Press the power button when the light is on for 4-step step dimming. One-touch operation allows switching between 25%, 50%, 75%, and 100% to change the light intensity according to the situation.

Light level adjustment: Stepless dimming

Stepless dimming from 0 to 100% is performed with the left and right dimming buttons, and fine adjustment is possible in 1% increments. The digital percentage display allows for fine adjustment and a sense of security.

Light intensity adjustment: Memory function

The "memory function" is especially useful when shooting movies, as the light is turned off once and then turned back on again at the same intensity as when the light was turned off.

Flash sensor function for still image capture

The camera is equipped with a "flash sensor function" that detects the strobe light, automatically turns off the light, and turns it on one second later. Since the light turns off in response to the strobe light, there is no need to worry about the light being captured. A spotlight is utilized as a focus light. The wide light can be used to find a subject or check the environment without worrying about uneven exposure or color blurring.

Compact body for easy handling

A spot light source is laid out in the center of the doughnut-shaped wide light source, eliminating waste in the arrangement of light-emitting surfaces and enabling a minimized light head. With a compact size that fits in the palm of the hand and an underwater weight of only 163 g, the body design fits comfortably in the hand, making it easy to use and maneuver.

Easy-to-read color LCD panel display

A variety of functions are displayed on a highly visible color LCD panel. The "light intensity" and "available lighting time," most important underwater, are displayed on the same large, easy-to-read screen. Light intensity can be adjusted simply by pressing a button while viewing the panel display.

• Light intensity: Light intensity during lighting is displayed in 1% increments.
• Remaining lighting time: Displays the lighting available in real-time.

Mode icons are used to display functions.

A colored icon indicates the function (mode) in use.

• Spot: Lights up when the spotlight is used.
• Wide: Lights up when wide light is used.
• Battery: Flashes when the camera is in safety mode.
• FS mode: Lights up when flash sensor mode is used.
• Remote control mode: Lights up when the remote control is used.

Four trouble-shooting functions

• Safety mode: Battery indicator flashes. [The display shows "10min" and starts counting down.
• When the light head reaches 55°C (55°F) or higher during use, it automatically switches to the protection mode, reducing the light intensity to 20% of its maximum.
• Blinking Signal Mode: "BLI" is displayed. (Blink = blinking).
• The light repeats [3 short blinks] ⇒ [3 long blinks] ⇒ [3 short blinks] ⇒ [OFF].

Battery charging is 2-way

Despite its compact body, the Li-ion battery has a large capacity of 3400 mAh and can be recharged in two ways.

1. Direct charging:

Direct charging is possible by connecting the supplied dedicated rear charge plug to the magnetic terminal on the back of the body. Since there is no need to remove the battery from the body, there is no risk of submersion in water. There is no need to remove the battery from the body.

2 Removable charging:

The battery can be removed from the body for recharging. The battery is compact, so there is no need to worry about running out of power if you have a spare battery for replacement. The battery is compact, so if you have a spare battery, you won't have to worry about running out of power.

Power up by replacing the lighthead

Power up by replacing the lighthead! The LX series light heads can be exchanged for higher-end models with higher maximum luminous flux. The body part is the same; the LX-2400SW FS light head can be used as a 2400 lm light, and the LX-4000SW FS light head can be used as a 4000 lm light. *Setting is required after replacing the light head. Please refer to the instruction manual for details.

Specifications

• [Luminous power] 4000lm
• [Beam angle (underwater)] 100° (wide) / 30° (spot)
• [Color temperature] 5500K (wide) / 6500K (spot)
• [Color rendering index] RA90 (wide) / RA70 (spot)
• [Continuous burn time] 30 minutes (wide) / 120 minutes (spot)
• [Flash sensor] Equipped
• [Remote control] Compatible
• [Interface] LED LCD Panel
• [Power] Rechargeable lithium-ion battery
• [Battery capacity] 3400mAh / 7.4V
• [Charging time] 2.5 hours
• [Charging method] Light body / Battery unit
• [Depth rating] 100m / 330ft
• [Size] Φ58 x 139mm / Φ2.3 x 5.4in
• [Weight (Battery included)] 430g / 15oz (on land) / 163g / 6oz (underwater)
• [Screw diameter] M52
• [Bottom plate] FIX NEO series U type/M6 thread
• [Color] BLACK or WHITE
• [Included Accessories] Battery Pack SB-L1, Charger, Gun Grip, Ball Base, YS Base, GoPRO Base, Loc-Line Base, Charge Cap, Charge Plug, Wrist Lanyard, Fixing Screw, Allen Key, O-ring Grease, O-ring Remover