Seiko watches always look and feel a piece of precision and sturdy engineering and nothing perhaps – other than the Grand Seiko – demonstrates that better than the SKX009J1. It’s an excellent 7S26, 21-jewel automatic movement that drives it and the big, unidirectional timer bezel makes the watch a terrific deal! The very bright, long-lasting lume is an added advantage (eight to ten hours glow). It makes the Seiko SKX009J truly a Diver’s watch and not just a beater with an over-inflated ‘Dive Watch’ image.

• Iconic "Pepsi" Bezel: The most recognizable feature is its unidirectional rotating bezel, with a red portion for the first 20 minutes (or 15, depending on the specific iteration) and a blue portion for the remainder, resembling the colors of a Pepsi logo. This bezel is crucial for timing dives.
• Automatic Movement: Powered by Seiko's robust and reliable 7S26 automatic (self-winding) movement.winding itself with the motion of your wrist. It features a day-date complication at the 3 o'clock position (often with English and Arabic day options), but it does not hack (the second hand doesn't stop when setting the time) nor does it support manual winding via the crown.
• ISO Certified Diver: The SKX009J1 is an ISO 6425 certified dive watch, meaning it meets rigorous standards for water resistance, shock resistance, and anti-magnetism.
• Impressive Water Resistance: Rated for 200 meters (20 ATM) of water resistance, making it suitable for professional diving (not just recreational swimming). It features a secure screw-down crown positioned uniquely at 4 o'clock, which also enhances comfort.
• Robust Case Construction: The case is made from stainless steel (typically 316L), with a classic brushed top and polished sides. It has a diameter of around 42mm and a thickness of approximately 13mm, making it a substantial but wearable watch for many wrist sizes, thanks to its relatively short lug-to-lug distance (around 46mm).