The Seiko Prospex Mar Watch SPB383 boasts a robust and durable design with a 42mm case and a stainless steel and ceramic bezel. The black dial, equipped with Lumibrite hands and indices, is covered by a sapphire crystal with anti-reflective coating on the inner face, ensuring excellent visibility in low-light environments or complete darkness. With automatic movement and manual winding capability, the watch is also water-resistant up to 20 bars (200 meters), making it suitable for sea-related activities.