The Seamaster Aqua Terra is probably the most elegant member of the Seamaster family. With its simple, linear design, this diving watch can easily pass for a dress watch, despite being water resistant to 150 m (15 bar, 492 ft). Three-hand watches make up the majority of this collection, though you will find chronographs and watches with a second time zone as well. Omega even offers special editions for women in their Ladies' Collection. Master Chronometer movements have been powering the Aqua Terra since 2017. Before that, the series featured both automatic and quartz calibers.

You can get one of the quartz models for as little as 1,100 to 2,100 USD. Prices for older three-hand models with an automatic movement begin around 2,700 USD, while the current models start at about 4,300 USD. If you'd like to call an Aqua Terra with a chronograph function your own, be prepared to spend about 4,200 USD. Be sure to add another 2,300 USD on top of that for a chronograph with a second time zone. With gold and diamonds, that price climbs to between 11,000 and 15,000 USD.

The Seamaster Bullhead is a coveted collector's item. Two push-pieces flank the main crown at 12 o'clock on top of the wedge-shaped case, giving the watch the look of a bull's head. Another peculiar crown sits at 6 o'clock and is used to operate the inner bezel. This unusual chronograph was first introduced in 1969. After many years silently developing a cult following, many watch enthusiasts rejoiced when Omega reintroduced the Bullhead almost entirely unchanged in 2013. The new edition costs around 7,000 USD, while well-maintained examples from 1969 sell for about 11,000 USD. Collectors may also be interested in the limited edition models, such as the one dedicated to the 2016 Olympic Games in Rio. You can call this timepiece your own for approximately 8,800 USD.

Even though the Railmaster isn't a diving watch, it's still part of the Seamaster family. When Omega first presented this timepiece in 1957, it was mainly aimed at people whose work included regular exposure to strong magnetic fields. Magnetic fields can have a major effect on a watch's functioning. Omega solved this problem by housing the movement in an internal cage made of soft iron, which protected it against magnetic fields of up to 1,000 Gauss. Thanks to their Master Chronometer movements, current models can resist up to 15,000 Gauss . The Railmaster only comes as a three-hand timepiece in stainless steel – a reflection of its purpose as a functional and reliable tool. Plan to spend around 4,000 USD on a new, 40-mm edition. The limited 1957 Trilogy series also features a Railmaster, which is very similar to the original model. This timepiece costs about 6,600 USD. You'll have to spend significantly more if you're looking for a model from 1957. Prices for these pieces usually sit around 15,700 USD.