Seiko 145th Anniversary Limited Edition Prospex Speedtimer. This exceptional timepiece honors Seiko's 145-year heritage with a design inspired by vintage Speedtimer chronographs. Features a slim stainless steel case with super hard coating, curved to connect seamlessly with the multi-row bracelet for enhanced comfort and sport elegance. Silver-white dial with tachymeter scale and distinctive pattern evoking early Japan-made pocket watches, accented with gold details symbolizing the founder's vision. Dual-curved sapphire crystal and date calendar. Proprietary caliber 8R48 automatic movement: 34 jewels, 28,800 vibrations per hour, approximately 45-hour power reserve, manual winding capable. Column wheel and vertical clutch for smooth chronograph operation. Three-pointed hammer system ensures instant, synchronized hand reset. Chronograph measures up to 30 minutes elapsed time in 1/8-second increments. 10 bar, 100M water resistant. Tri-fold push-button release clasp. Limited to 700 pieces worldwide.