The Advanced Aqua is a unique timepiece. With it's extra large and unique casing the Advanced Aqua reaches another level. Featuring a Swiss ETA 2824 Automatic movement the Advanced Aqua can reach a depth of upto 500 meters. The helium valve on the left of the watch allows the watch to reach these depths without exploding from the pressure. The helium valve works on its own according to the pressure and does not need to be activated. The turnable bezel is one directional not to cause error when in use and with the hands illuminating in the dark as well as the point at the twelve of the bezel the watch looks amazing in the dark or under the sea. So whether you are going into unchartered waters or not this is a great looking watch for the entire year which will cause a stir amongst friends.