The YS-D3 offers lots of great improvements from it predecessor, YS-D2J, which lots of underwater photographers are ecstatic about. With the improvements on the circuitry the strobe can now produce a powerful Guide Number 33. Recycle time has also been improved which can fire again in 0.6sec even at Guide Number 22.

Features:

• Maximum Guide Number 33
• Newly developed aspherical troidal lens on the flash tubes provides even light dispersion, no hotspots are produced
• Wide beam angle of 120° or can even wider (150°) with the optional diffuser
• Large capacity condensers
• Firing the strobes at Guide Number 16 the strobe can continuously fire without any interval time
• Two-stage signal - Visual and Audible notification that the strobe is ready to fire 
• Has a pre flash cancel mode
• Improved power of target light which can be used as a dive light also. It is also adjustable in 2 steps
• Auto power off when the strobe is left turned on for a long time
• Over pressure relieve valve

Functions:

• DS-TTL II
• Slave TTL
• Manual Mode

Connectivity:

• 5-Pin Sync Cord/N
• Fiber Optic Cable