Sea & Sea YS-D2 Strobe

The strobe is equipped with a target light (approximately 100/300 lumen).

In use (target light switch in ON position), the light will be automatically turn off when the strobe fires and will automatically turn back ON after 0.5 sec.

[Guide Number (ISO 100/m) (land)] : 32, 24 (with Diffuser 100 attached), 20 (with Diffuser 120 attached)
[Beam Angle] : 80°x80°  (without Diffuser), 100°x100°(Diffuser 100), 120° x 120° (Diffuser 120)
[Batteries] : 4xAA A: 6V Ni-MH: 4.8V
[Number of Flashes *1] : A: 150 Ni-MH: 200
[Recycle time (full) *2] : A: 3.0 sec. Ni-MH: 1.5 sec.
[Colour temperature] : 5600K
[Colour temperature w/diffuser] : 5250K
[Depth rating] : 100m  / 330ft
[Dimensions (WxHxD)] : 89x111x141mm / 3.5 x 4.8 x 5.6 inches (excluding YS-base) 
[Weight] : 618g / 21.0oz (w/o batteries) (excluding YS-base)
[Underwater weight] :  Approx.+40g / 1.4oz (incl. batteries)
[Others]
Exposure control: DS-TTL II,  Slave TTL, Light level control dial (GN): 1 / 1.4 / 2 / 2.8 /4 / 5.6 /8 / 11 / 16 / 22 / 32 (11 steps)
Pre-flash control: Equipped with pre-flash cancel mode
DS-TTL II function
Slave function
Auto power OFF function
Sync cord: 5-pin Sync cord/N, Fiber-Optic Cable
Over-pressure relief valve
LED target light (output is adjustable in 2 steps)
Audible charge signal

*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 on 2400 mAh batteries.