It tracks your steps

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Caliber: 6R35 Movement type: Automatic with manual winding capability

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Lancetta data

Orologio Seiko Alpinist Prospex Automatico SPB121J1 choker It tracks your stepsMovement: Caliber 6R35 Movement type: Automatic with manual winding capability Accuracy: +25 to 15 seconds per day Case material: Stainless steel Glass: Sapphire, anti reflective coating on the inner surface LumiBrite on hands and indexes Strap material: Calfskin Closure: Dployante with release button Water resistance: 20 bar Case size Thickness: 13. 2 mm Diameter: 39. 5 mm Width: 46. 4 mm Rotating bush inner ring Stainless steel screw down crown