●Caliber No: 4R35 ●Mechanical automatic winding (with manual winding) ●Daily difference +45 seconds to -35 seconds ● Lasts approximately 41 hours at maximum winding ●Case material: stainless steel ●Band material: stainless steel ●Glass material: Hardlex ●Waterproof for 200m air diving ●Magnetic resistance: Yes ●Case size: (length) 49.5mm (width) 41.7mm (thickness) 12.3mm ●Nakadome: One push diver extender method ●Lumi Bright: Available (hands, indexes, bezel) ●Reverse rotation prevention bezel ●Number of stones: 23 stones ●Second hand stop function ●With calendar (date) function ●MADE IN JAPAN