MOVEMENT Mechanical, manual-winding China Made Caliber: Sea-Gull ST19. Column-wheel chronograph Functions: Hour, minute, second, chronograph (Central hour, minute and chronograph seconds hands, small seconds hand at 9 o'clock, 30-minute counter at 3 o'clock.) Jewels: 22.Frequency: 21600 vph.
CASE 316L stainless steel Diameter: 40 mm Thickness: 14 mm Lug width: 20 mm Water resistance: 30 meters Luminescence: No lume Dial: Sunburst finish. Applied hour markers and the Sea-Gull's aviation watch logo Crystal: Sapphire crystal. Double domed Case back: Screw-down decagon shaped Not transparent 316L stainless steel case back Crown: Push-pull. Fluted cylinder shape. Signed with the "S" logo.
STRAP Black Cowhide leather No quick release: Need tool to remove strap from case Fit for case lug width: 20 mm Clasp: Pin buckle. Stainless steel clasp. (Additional strap: Army-green. Nylon. Fit for case lug width: 20 mm. Clasp of additional strap: Pin buckle. Stainless steel material.)
Chinese character: 22 ZUAN (钻/占) - 22 JEWELS Position: 6 o'clock on dial. ZHONGGUO (中国) - China. Position: 6 o'clock on dial. TIANJIN (天津) - Tianjin city. Position: 6 o'clock on dial. 天津手表厂 - Tianjin Watch Factory. Position: on case back.
