Sea & Sea YS-01 Underwater Lighting Strobe Package for Compact Digitals

Sea & Sea
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About Sea & Sea YS-01

The Sea & Sea YS-01 is a compact slave strobe that can be used for wide-angle or macro photography. With its circular beam angle of 100 x 100° and a guide number of up to 20 it is the perfect strobe for small Point & Shoot cameras or DSLRs. The DS-TTL (Digital Slave TTL) feature gives you automatic exposure control when shooting in slave mode. It is best to connect the strobe to the housing with a fiber optic cable. For finer lighting control it is best to shoot in manual mode. This is easy since the YS-01 has a ten-level power dial located on the back of the strobe.

The YS-01 is powered by 4-AA batteries. You can get up to 330 flashes at full power with NiMH batteries. With NiMH batteries you will get a blazing fast 1.9 second recycle time, so you will not miss all the action on the reef. The YS-01 has a bright 1W LED target light that is bright enough to use as a dive light on night dives.

An external flash is your most important accessory. The ocean is one big, blue filter. As you descend, the reds and oranges quickly become muted shades of blue and gray. Using a color corrected strobe light will bring back your subject's natural color. The included Sea Arm VII is constructed with fiberglass-reinforced plastic resin offering a lightweight yet strong arm. With the included components, you can create a custom arm setup for your lighting needs. The tray is included.

Also included is the Sea & Sea fiber optic L-type cable that connects the built-in sensor on a Sea & Sea strobe to the built-in flash on the camera. When the camera's internal flash fires the cable will fire the external flash. The L shaped connectors resist bending and have improved light conducting efficiency.

Sea & Sea YS-01 Features

  • Kit includes everything you need to connect a strobe to a housing with fiber optic ports
  • When connected with the included fiber optic cable, the flash gives you DS-TTL (Digital Slave TTL automatic exposure control)
  • The included Sea Arm VII is rigid to keep the strobe in the right position
  • Manual control is easy with the ten-level power dial
  • Circular beam for a broad 100 x 100° angle of coverage
  • Bright LED target light in center of the strobe face is bright enough for night dives
  • Guide number 20 (ISO 100/m) for high power performance
  • Recycle time of approximately 1.9 seconds with NiMH batteries at full power

Sea & Sea YS-01 Specifications

Strobe head
Sea Arm VII
Fiber Optic L-Type Sync Cable
Guide No.
20 (ISO 100/m)
Coverage Angle
100 x 100°
Depth Rating
250' (75m)
Flash Modes
DS-TTL, manual
Exposure Control
10 step guide number control dial
Targeting Light
Yes, LED
Audible Signal
Color Temperature
5600° K
Recycle Time
NiMH Battery: approximately 1.9 second
Flashes (Full Power)
Alkaline: 230
NiMH: 330
Power Source
4 AA batteries
2.7 x 4.3 x 5.2" (68 x 108 x 129mm)
Weight (Land)
17.7 oz (505g)
Mfr #
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