2Jewellery Mechanical Watches For Men. Movement: CAL.3H42 Model: 1916 Drive: Dual-spring drive Strap material: Other Dial thickness: 11.9mm Dial diameter: 30-45MM Case material: stainless steel Additional features: Tourbillon Power reserve: 60h Display method: pointer Crown: Straight Buckle style: Butterfly double snap Waterproof depth: 5ATM Watch mirror material: Synthetic sapphire crystal