Experience the ultimate blend of precision and style with the Seiko SSB421P Night Run Chronograph Men's Watch. Powered by the reliable quartz movement calibre 8T67, this watch offers a precision of ±15 seconds per month and a battery life of approximately 3 years. The sleek stainless-steel case, measuring 11.6mm in thickness, 39.5mm in diameter, and 46.6mm lug-to-lug, exudes a refined and timeless appeal. The sapphire crystal ensures durability and clarity, while the Lumibrite on the hands and indexes provides enhanced visibility in low-light conditions. With water resistance up to 100 meters, this watch is ready to accompany you on your night runs and withstand various activities. With its screw case back and a weight of 68.0 grams, the Seiko SSB421P Night Run Chronograph Men's Watch is a perfect combination of functionality, durability, and sleek design. - Caliber No. 8T67 - Quartz Movement – Powered by a Battery - Accuracy +/-15 seconds a month at normal temperature range (5°C and 60°C) - Approx 3 Years Battery Life - 39.5mm Case Size - 11.5mm Case Thickness - Stainless Steel Case - Nylon Strap - Sapphire Crystal - Pull Out Crown - Stopwatch Measures 12 Hours In 1/5th Of A Second Increments with Split Time Capability - Tachymeter - 100 Meters Water Resistant