Scubapro Frameless Gorilla Mask Fourth Element it provides an estimate of

it provides an estimate of tank pressure when the first stage is attached to a tank letting you know if the tank has gas without needing to activate the computer

Dimensions: (External)      75mm x 125mm (W x H)

• Full-lock mode to provide tension for

“FLOATING” DISPLAY: The Galileo HUD’s micro OLED screen is designed to be mounted on a diving mask in close proximity to the human eye

Scubapro Frameless Gorilla Mask Fourth Element it provides an estimate ofExtra large single lens provides an expansive field of view while reducing volume. Slightly larger double seal matte skirt creates a comfortable, watertight seal on larger faces. Push button buckles attach to tabs on the skirt to optimize range of motion whendialing in fit. Buckle tabs are flexible, enabling the mask to be folded flat for traveling. Wide headband allows for a comfortable fit against the back of the head.