Mount the Speedlite 420EX on the camera by loosening the locking collar on the bottom of the flash unit, sliding the unit's mounting foot completely on to the camera's hot shoe and tightening the locking collar.
At the bottom of the unit is a rubber bellows to seal out water and dirt.
The top of each chlorinator has a sealed hopper for periodic feed charging, and gaseous or liquid chlorine is added at the bottom of the unit.
The water is pumped into the bottom of the unit where it rises up through a bed of the organic filter media, binding the arsenic.
At just over three pounds without the flat lithium-ion battery pack that attaches to the bottom of the unit, the DVD-LV75 feels like it weighs less than the new "Harry Potter" book, and it's definitely thinner.
With a sliding door at the bottom of the unit open, it measures 4.8 inches long.
A 2 cm-diameter gravel was found at the bottom of this unit.
Metal foam was used as a distillation packing on the bottom of the unit.
The thermal paper (yes, thermal paper) even fits in its own compartment at the bottom of the unit.
There are physical controls hidden along the bottom of the unit, including a switch to manually turn off the camera.
