Material: Stainless steel case construction, ensuring durability and resistance to corrosion.
Size: Moderately sized case, typically around 40-44mm in diameter, offering a comfortable fit on most wrists.
Finish: Combination of brushed and polished surfaces, enhancing the watch's visual appeal.
Bezel: Unidirectional rotating bezel with luminous markers, facilitating accurate timing during dives.
Band/Strap:
Material: Stainless steel bracelet designed for durability and comfort during extended wear.
Design: Link bracelet with a secure clasp for a reliable fit.
Adjustment: Adjustable links for customizable sizing to fit various wrist sizes.
Crystal: Sapphire crystal, renowned for its exceptional scratch resistance and clarity.
Color: The dial of the SPB121J1 typically features a classic black or dark blue color, ensuring optimal contrast and legibility underwater and in various lighting conditions.
Hour Markers: Applied indices or numerals, complemented by luminescent hands and markers for enhanced visibility in low-light environments.
Date Display: Positioned at the 3 o'clock position for practicality.
Movement:
Type: Seiko's robust automatic movement powers the SPB121J1, offering reliable and accurate timekeeping without the need for a battery.
Caliber: Seiko typically equips its Prospex watches with advanced automatic movements from their in-house calibers, known for their precision and durability.
Water Resistance: The SPB121J1 boasts a water resistance rating suitable for professional diving activities, typically up to 200 meters (20 ATM).
