Watch Seastrong Diver 300 Heritage AL-520BY4H6

The Watch

Alpina crafts trend-forward, adventurous timepieces - and this Seastrong Diver 300 Heritage AL-520BY4H6 Watch from the Seastrong collection is no exception. Built around a round stainless steel case with a 42 mm diameter and 12.30 mm thickness, it's designed for men who want modern elegance on the wrist. The case houses a round dial protected by a convex sapphire crystal - shielding it from daily impacts and scratches. On the right side of the case, two notched crowns sit at 2 and 4 o'clock, letting you set the hands and rotate the internal bezel. A screw-down case back delivers water resistance to 30 ATM - that's 300 meters - so this watch is ready for wherever life takes you.

The Dial

The round dial draws you into a black sunray-finished backdrop that catches the light with every movement. At its center, three orange hands sweep gracefully, tracking the hours, minutes, and seconds as they point to baton indexes - doubled at 3, 6, and 9 o'clock, with a triangular marker at 12. A minute track runs along the perimeter for precise timekeeping. Inside, a black internal bezel rotates unidirectionally via the crown at 2 o'clock, complete with a minute track and baton indexes to serve as a elapsed-time marker. Luminescent-coated hands ensure legibility in the dark. The brand name sits just below the 12 o'clock index, with the collection name at 6 o'clock.

The Movement

Alpina equips this diver with a Swiss-made automatic movement - specifically the AL-520 caliber, featuring 26 jewels and a 28,800 vph oscillation frequency. It delivers precise hours, minutes, and seconds display, with a 38-hour power reserve.

The Strap

Crafted for optimal sporting comfort, the strap on this watch is made from brown leather. Supple and refined, it wraps naturally around your wrist. It fastens with a pin buckle for an adjustable fit, and features a 21 mm lug width.

Water Resistance

With water resistance to 300 meters - 30 ATM in watchmaking terms - even Captain Nemo would envy this marine-grade timepiece. Bath, shower, swim, or dive (freediving or scuba) - this watch handles it all and comes out gleaming. Our team of watch experts at Ocarat asks just two things of you:

• Do not operate the pushers or crown while the watch is submerged.
• Send us the most stunning shot of an exotic deep-sea fish - with the watch in the frame if possible. We'd love to feature it in our office and on our Instagram page!