With rugged ion-plating and surgical-grade stainless steel housing, the Invicta Subaqua Noma is as tough and durable as its namesake would suggest, "best under pressure" and designed for seaborne expeditions with water resistance rated at 50 ATM. Although most watches do not exhibit or comprehend with sea life, the closest watch with that technique can considerably be very few Casio watches that has built in reliability towards water pressure. Even with that added feature, it may not be enough to handle heavy pressures underwater. Fortunately modern times has found a way to add the extra shock and window to suppress such pressures however there is no telling how long it will last.

Its brushed unidirectional ratcheting bezel is engraved with raised and polished Arabic numerals at five-second intervals, lending the Invicta Subaqua Noma with a serious look that is professional and suitable for all occasions. A round sunray dial is available in colors to match its wrist strap of field brown or mushroom black. Luminous index markers trimmed in silver tones are positioned by the hour readings, with subdials stationed at two, six, and ten o'clock and a date window at four. A handy tachymeter, for determining speed over distance, encompasses the whole dial.

A particular version such as the Invicta Subaqua Noma III can be had with different subdial designs. One model features two adjacent subdials that form a figure-eight, while three subdials on another are located as the points of a triangle, each variously displaying the day, month, and moon phase. Some Subaqua Nomas are even analog-based. An interesting cosmetic feature that can be found is the arched gateway encompassing the crown, with some models sporting two knobs or pushers next to it.

The bracelet is offered in two-toned color schemes of gold and black, gold and silver, and black and blue. A model like the Reserve Subaqua features a three-link bracelet with crescent shapes on the central link for a visually distinguishing touch. Reserve Subaquas can also feature such cosmetic motifs like a skeleton dial or diamond highlights. But whether a Reserve or a Noma, the diver's buckle on a Subaqua is simple but sturdy, and all Subaquas bear an exceptional mineral crystal when price is considered. Invicta's own Trinite brand of luminous paint is used on the hour and minute hands for great visibility in conditions of low light.

The Subaqua bears a pedigree of technical excellence stretching all the way back to the 1837 vision of Invicta founder Raphael Picard, who established the brand in La Chaux-de-fonds, Switzerland, to offer precision Swiss timekeeping at moderate price-points. Invicta is Latin for "invincible," and their modern and trendy Subaqua line of automatic watches are engineered to last while remaining affordable. Most people will purchase them for the looks, however, which are very handsome indeed. Engineered for precision but styled for fashion, an Invicta is suitable for any occasion and just about any task.