Crystal Hand Wind Skeleton Tourbillon Mechanical Watch For Men 7020

Product parameter
Movement: Original tourbillon skeleton movement
Waterproof: 100M
Watch mirror: synthetic sapphire
Strap material: first layer cowhide
Dial features: double-sided hollow design
Case material: stainless steel
Dial thickness: 10.5mm
Dial diameter: 42.8mm
Frequency: 28800Hz/Hr
Energy storage: 40 hours
Travel time error: ±10 seconds/day
Warranty : 1 years