Seiko Prospex Speedtimer HBC003

The Seiko Prospex Speedtimer HBC003 combines precision engineering with professional-grade durability. Powered by the reliable 6R55 automatic movement with manual winding capability, this watch delivers +25 to -15 seconds per day accuracy and an impressive 72-hour power reserve. Built for performance, the 39.5mm stainless steel case features a super hard coating and houses a curved sapphire crystal with anti-reflective inner coating for optimal visibility. The screw case back ensures maximum water resistance at 20 bar, while magnetic resistance of 4,800 A/m protects the movement in challenging environments. Designed for timing enthusiasts, the inner rotating ring with countdown scale enables precise measurements, complemented by a stop second hand function for accuracy. LumiBrite hands and indices provide reliable readability in low-light conditions. The three-fold clasp with push button release offers secure everyday wearability, with a comfortable 20mm lug width and 44.5mm lug-to-lug distance.