Omega Speedmaster Racing Co-Axial Chronograph 40 mmvsSeaholm Flats Chronograph

Owners widely consider the 40mm case size of the Omega Speedmaster Racing Co-Axial Chronograph 40 mm ideal, distinguishing it from larger Speedmaster models. The Omega 3330 movement is seen as solid and serviceable due to its ETA origins, offering excellent value. However, some owners find the watch thicker than comparable automatic watches, with one noting a stiff second stopwatch button. Disagreements exist regarding its value, with one owner calling it Omega's greatest value while another found its thickness combined with the 40mm diameter a reason to move on. One owner reported misalignment at several hour markers and the '5' on the dial being too close to a subdial, while another noted subdials overlapping indices and touching the chapter ring. On balance, owners rate the Omega Speedmaster Racing Co-Axial Chronograph 40 mm highly for its 40mm case size and the value offered by the 3330 movement.

Seaholm Flats Chronograph owners report robust build quality with features designed for shock and magnetism resistance. One owner found the watch bulky and sold it at half its retail price after acquiring it on the grey market. Overall, owners rate the Seaholm Flats Chronograph based on its build quality and value, though some find its dimensions challenging.