Sea&Sea Left Grip Extension @inonldmount The Lens Holder [hole] is

The Lens Holder [hole] is usable as like "LD Lens Holder for Float Arm" as well

Over the course of development a combined total of more than 1

The originally developed "aspherical toroidal lens" is placed in front of the light-emitting tube

80 minutes [Alkaline battery]

Designed sole use underwater to provide effectively suppressed aberrations in all focal range and unparalleled high quality image on any supported shooting range

Sea&Sea Left Grip Extension @inonldmount The Lens Holder [hole] isWith this product, the left housing grip can be positioned forward to provide easy access to the focus knob on the Extension Ring 46 with Focus Knob #30117 with Focus Gear. Specifications Dimensions (WxHxD): 10 x 25 x 54mm 0. 4 x 1. 0 x 2. 1 inches Weight(including accessories): Approx. 55g 1. 9oz Construction: Corrosion resistant aluminium alloy (alumite coating)