Haofa Tourbillon 1940 double spring drive watch

Product Description

Movement: Flying Tourbillon
Movement model: CAL.3H61
Power reserve: 60 (hours)
Vibration frequency: 28800 (times/hour)
Drive: double spring drive
Winding method: manual winding
Case diameter: 41mm
Case thickness: 13.5mm
Strap width: 21mm
Total length of the watch: 220mm
Case material: 316L stainless steel
Strap material: crocodile leather
Water resistance: 50 meters
Mirror: synthetic sapphire
Glass back cover: synthetic sapphire glass