The Omega Seamaster Aqua Terra 150m Master Co-Axial Chronometer measures 41 mm across and features a stainless steel case paired with a brushed and polished silver stainless steel band. Its fixed bezel frames a horizontal-textured silver dial, complete with luminous hands, index hour markers, and minute markers around the outer rim. You’ll find a date window at 6 o’clock, and the transparent case back offers a peek at the movement inside—though that view may be for illustration rather than every example you buy. Under the hood sits Omega’s Calibre 8800 automatic chronometer, delivering a 55-hour power reserve. It tracks hours, minutes, seconds and power reserve at a glance, and it’s water resistant to 150 meters (495 feet). A screw-in crown and scratch-resistant sapphire crystal ensure durability, while the deployment clasp with push-button release keeps the watch secure on your wrist. Registered as model 220.10.38.20.02.001 (often condensed to 22010382002001), it’s a clear example of Omega’s focus on precision timekeeping and robust design for everyday wear.