Ikelite DS51 II 50Ws Underwater TTL Strobe @focustargetlight Also this base adapter is

Also this base adapter is usable to attach an action camera or compact digital camera on an accessory shoe of an underwater housing to shoot simultaneously

Weight :[Air] 8 g/0

Easy-to-use All Around Close-up Lens

) on their M6 screw hole

LCD covers

Ikelite DS51 II 50Ws Underwater TTL Strobe @focustargetlight Also this base adapter isIf 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. Ergonomics You won't need a pair of tweezers to set the DS51 strobe. The strobe power exposure mode switch is prominent on the rear of the strobe