Seiko Prospex Alpinist Automatic Green Dial Silver Steel Bracelet Men\'s Watch SPB155J1 The Case: The Seiko SPB155J1 is part of the Seiko Prospex line, a unique collection of sports watches reflecting the brand’s many years of expertise. Known as the Alpinist, the Seiko SPB155J1 has a sturdy stainless steel case measuring 38mm in diameter. With a handsome fixed bezel and a thickness of 12.9mm, this watch can go into the medium-sized category. The curved lugs bring a touch of panache to what is otherwise a tough-looking case. Purists will love the screwed-down, see-through case back, offering a look at the inner-workings of this automatic watch. The screw-down crown at three o’clock is oversized and adds to the sporty image of this watch. The dial is protected by curved sapphire crystal, which also boosts the solidity of the Seiko SPB155J1. The Dial: With a mottled green dial, the Seiko SPB155J1 definitely has an athletic feel to it. This is heightened by the presence of oversized, luminescent indices, which are coated with Lumibrite along with the flamboyant indexes. The date window at three o’clock brings some added depth to the dial of the Seiko SPB155J1. The Bracelet: The brushed stainless steel bracelet of the Seiko Prospex Alpinist SPB155J1 adds to the robust nature of this watch. The three-fold clasp with push-button release is discreet and easy to use. The Functions: Using the self-winding automatic caliber 6R35, the Seiko SPB155J1 benefits from over a century of Japanese watchmaking expertise. The watch has 24 jewels, a stop second-hand function and remains water-resistant to 200 metres, adding to its sporting credentials. If you have any questions please  click here Click here to join our  facebook  and  Instagram !