Produced by TT factory (three codes in one) Tape Steel Band Color 20 Upgraded Ceramic Ring Top Authentic Arrival Highly Recommended Seamaster Series Mi Diving Watch Exclusive Quality on the Whole Network. [Movement] Equipped with Citizen Plus Plywood imported from Japan Fully automatic mechanical movement, truly zero-repair, accurate, practical and 100% waterproof. [Glass] High-definition double sapphire glass [Ceramic Ring] Use imported ceramic ring with 12-point sapphire moonlight beads (beautiful/high-end) [Pointer] Super-LumiNova luminous coating, blue and green two-color luminous, minute hand green luminous display with green luminous dot on the bezel for diving oxygen countdown [Literal] Corresponds to the seahorse porcelain surface craftsmanship of the counter (the visual effect instantly beats ordinary oil pressure) [Case 】Using a 316L stainless steel case, equipped with the only original ceramic one-way rotating timing ring in its class. The pressure relief valve on the side of the case is consistent with the original. The diameter of the watch is 42/11mm, the official perfect size.