SEA & SEA YS-D3 Lightning with Free DiveCatalog's Coil Lanyard
SEA & SEA YS-D3 Lightning with Free DiveCatalog's Coil Lanyard is backordered and will ship as soon as it is back in stock.
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Product Information
The Sea & Sea YS-D3 MKII LIGHTNING is an underwater strobe rated to 100m / 330ft with a Guide Number of 33 (28 with the diffuser attached). This listing does not include the Fiber-Optic Cable.
Who it is for
It suits underwater photographers shooting through a Sea&Sea or third-party optical TTL converter, since the YS-D3 MKII LIGHTNING carries a newly designed circuit that improves TTL accuracy and converter compatibility over the original YS-D3 LIGHTNING, while keeping the same product number (03123) as a running change update.
Key details
- Guide Number 33, or 28 with the diffuser attached, ISO 100/m on land
- Beam angle 80°x105° without diffuser, 100°x110° with diffuser, and 150°x170° with the optional Dome Diffuser
- Runs on 4x AA batteries: 6V with alkaline, 4.8V with Ni-MH
- 140 flashes on alkaline batteries, 220 flashes on Ni-MH batteries, with a full recycle time of 3.5 seconds (alkaline) or 1.7 seconds (Ni-MH)
- Color temperature 5800K without the diffuser, 5500K with it
- Depth rated to 100m / 330ft
- Dimensions 92x111x147mm (3.6 x 4.4 x 5.8 inches) and weight 610g / 21.5oz without batteries, both excluding the ball base; underwater weight is approximately -20g with batteries and ball base installed
- 11-step light level control dial, DS-TTL II and Slave TTL exposure control, 30-minute auto power off, and an LED target light adjustable between 300 and 150 lumen
Compatibility and sizing
The strobe connects via a 5-pin Sync cord/N or a Fiber-Optic Cable, though this listing does not include the Fiber-Optic Cable. It mounts on the included standard ball base and is also compatible with the optional YS Base and the Diagonal Ball Base (YS-D3 series only), plus optional Snoot and Dome Diffuser accessories.
What's in the box
- Strobe unit
- Ball Mount Strobe Adaptor
- Diffuser
- Silicone grease
- DiveCatalog Quick Release Coil Lanyard with Buckle, bundled by DiveCatalog
DiveCatalog.com is an authorized Sea & Sea dealer and a dive shop in Irvine, California, since 2003. Call or chat with us at 888-701-4017 if you have questions about fit, cable compatibility, or accessory options for this strobe.
- Aspherical optical toroidal lens: a newly designed circuit and lens disperse light evenly from center to edge.
- Consecutive firing: fires continuously at GN16 without interval, and can refire within about 0.8 seconds at GN22.
- DS-TTL II and Slave TTL: supports Sea&Sea DS-TTL II exposure control and Slave TTL triggering.
- Two-stage ready signal: visual and audible signals indicate when the strobe is fully charged.
- Over-pressure relief valve: built in for safety at depth.
- 11-step GN dial: light level control dial adjusts from GN1 to GN33 across 11 steps.
- LED target light: adjustable between 300 lumen and 150 lumen output.
- Auto power off: shuts down automatically after 30 minutes of inactivity.
- Depth rated: rated to 100m / 330ft.
- Battery caution: do not use non-recommended batteries such as lithium primary batteries, due to risk of leakage or overheating.
| Guide Number (ISO 100/m, land) | 33, 28 (with Diffuser attached) |
| Beam Angle | 80°x105° (without Diffuser), 100°x110° (with Diffuser), 150°x170° (with optional Dome Diffuser) |
| Batteries | 4xAA, Alkaline: 6V, Ni-MH: 4.8V |
| Number of Flashes | Alkaline: 140, Ni-MH: 220 |
| Recycle time (full) | Alkaline: 3.5 sec. Ni-MH: 1.7 sec. |
| Color temperature | 5800K (without diffuser) |
| Color temperature w/diffuser | 5500K |
| Depth rating | 100m / 330ft |
| Dimensions (WxHxD) | 92x111x147mm / 3.6 x 4.4 x 5.8 inches (excluding ball base) |
| Weight | 610g / 21.5oz (w/o batteries, excluding ball base) |
| Underwater weight | Approx. -20g (incl. batteries and ball base) |
| Light level control dial (GN) | 1 / 1.4 / 2 / 2.8 / 4 / 5.6 / 8 / 11 / 16 / 22 / 33 (11 steps) |
| Auto power off | 30 min |
| Sync cord | 5-pin Sync cord/N, Fiber-Optic Cable (genuine SEA&SEA recommended) |
| LED target light | Adjustable in 2 steps (300 lumen / 150 lumen) |
- Strobe unit
- Ball Mount Strobe Adaptor
- Diffuser
- Silicone grease
- DiveCatalog Quick Release Coil Lanyard with Buckle, bundled by DiveCatalog
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Does this YS-D3 MKII LIGHTNING come with the Fiber-Optic Cable?
No, this DiveCatalog listing does not include the Fiber-Optic Cable. The strobe can be triggered through a 5-pin Sync cord/N or a Fiber-Optic Cable. The box holds the strobe unit, Ball Mount Strobe Adaptor, Diffuser, silicone grease and DiveCatalog's Coil Lanyard, so source a Fiber-Optic Cable separately.
What batteries does the YS-D3 MKII LIGHTNING use and how many flashes do they last?
It runs on 4x AA batteries, 6V with alkaline or 4.8V with Ni-MH. Alkaline batteries deliver about 140 flashes with a 3.5 second full recycle time, while Ni-MH batteries deliver about 220 flashes with a faster 1.7 second recycle time.
How is the YS-D3 MKII LIGHTNING different from the original YS-D3 LIGHTNING?
It is a running change update, so the product number (03123) stayed the same. The MKII version uses a newly designed circuit and aspherical optical toroidal lens that improve TTL light intensity accuracy and compatibility with Sea&Sea and third-party optical TTL converters, while keeping the same Guide Number, beam angle, and depth rating as the original.














