Flying Tourbillon Mechanical Wristwatch Skeleton Sapphire 7061

Movement: Top tourbillon movement 

Waterproof : 50M 

Watch mirror: synthetic sapphire 

Strap material: first layer cowhide 

Dial features: double-sided hollow design 

Case material: stainless steel 

Dial thickness: 10mm 

Dial diameter: 42.5mm 

Frequency: 21600Hz/Hr 

Energy storage: 52 hours 

Travel time error: ±10 seconds/day 

Warranty : 1 years