Product Information



[ Discontinued Products ]
Compact underwater strobe for easy TTL photography using a digital camera.
U/W Strobe


YS-17 (Gold)
(Product No.03109)

[Accessories] Fixing bolt, diffuser, slave sensor cap

*When the YS-17 strobe is used with a compact digital camera in a housing, use the Fiber-Optic Cable (L-type)50107.

O-ring Set
(Product No.62142)
   Enlarged image

Relevant Information

The YS-17 Universal Lighting Package
(Product No. 03529)
This reasonable lighting package allows you to attach the YS-17 to commercially available waterproof cases by any manufacturer.
[Package content]
YS-17, Grip-Stay S, Fiber-Optic Cable (L-type)50107, Strobe Mask Set

Compatibility list for YS-17 strobe and digital cameras on the market.
*The Fiber-Optic Cable and the Strobe Mask Set are required when using the SEA&SEA strobe with a waterproof case made by another company.
Compatibility list for YS-17 strobe and digital cameras


Professional style underwater lighting that is easy to use even for beginners
The YS-17’s slim body – 90×110×140mm (W×H×D) – makes it easy to use underwater lighting more casually. Its light weight – 477g (including batteries) – makes it the lightest, most compact strobe in the YS strobe lineup. The YS-17’s system uses a unique TTL function so anyone can easily enjoy TTL photography. Even if the distance to the subject changes, the YS-17 will automatically adjust the light level so you can easily get the correct exposure. You can also switch between TTL and manual mode so you do not miss any opportunities for a great picture even in those situations, like dark places, where the TTL function does not work very well.


[ YS-17 ]
[Guide Number (ISO 100/m) (land)] 14
[Beam Angle] 70°x 53°
[Batteries] 2xAA A: 3V Ni-MH: 2.4V
[Number of Flashes*1] A: 200 Ni-MH: 400
[Recycle time (full)*2] A: 3 sec. Ni-MH: 3 sec.
[Color temperature] 5600K
[Color temperature w/diffuser] 5100K
[Depth rating] 60m / 200ft
[Dimensions (WxHxD)] 90x110x140mm / 3.6x4.4x5.6inch
[Weight] 425g / 14.8oz
[Underwater weight] -10g / -0.4oz
- Exposure control: TTL, Light level switch (GN): 7/14 (2 steps) *3
- Slave TTL function
- Slave function
- Sync cord: Fiber-optic cable (L-type)
- Over-pressure relief valve

*1 Number of flashes and recycle time depends on the battery brand, temperature and frequency of use. *2 Number of flashes and recycle time of Ni-MH batteries were tested by 2700mAh batteries. *3 The Guide Number 14 in manual mode is limited only to cameras with built-in flashes without pre-flash function.

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