If size and weight are your primary deciding factors, the DS51 II is for you. The DS51 II is one of the smallest and lightest strobes in its class weighing in at less than one pound (443g) per strobe. The compact size makes it simple to position the strobe for macro, super macro, and close focus wide angle.

Specifications

Depth rating: 100 meters (330 feet)

Power: 1 to 50 Ws

Coverage angle: 80º with included diffuser

Power control: 6 stops in 1/2-stop increments

Color temperature: 5700K

Guide number at 1m (ISO 100): 17 full power

Flashes per charge: 300 to 1000 dependent on power setting

Recycle time: 0.1 to 3.5 seconds dependent on power setting

Electrical sync connection: Ikelite ICS 5-pin bulkhead

Battery: 4 AA cell alkaline, NiMH, or NiCad (not included)

Dimensions: 81 mm diameter x 119 mm length (3.2" x 4.7")

Weight: 443 grams (0.97 pounds) without batteries or mount

Buoyancy: Neutral in fresh water

In the Box

DS51 Strobe

Battery Door # 9440.45 (installed)

Diffuser # 0591.2 (installed)

1" Ball Mount # 4081.4 (installed)

Waterproof bulkhead cap # 9104.7 (installed)

Silicone lubricant 1cc tube 

2 year limited warranty