2Jewellery Planet Watch. Movement: CAL.3H35 Movement model: 1089 Drive: single spring drive Power storage: 42 (hours) Vibration frequency: 28800 (times/hour) Winding method: manual winding. Diameter of case: 40-42mm Case thickness: 13.3mm Band width: 20mm Market visibility 20mm Case Material: 316L fine steel Band Material: Italian calfskin Waterproof depth: 30m domestic waterproof Mirror: artificial sapphire Buckle: folding buckle Crown: straight in