Đồng Hồ Richard Mille RM 57-03 Tourbillon Sapphire Dragon

Manual Winding Tourbillon Sapphire Dragon
Movement dimensions: 32.10 x 30.30 mm
Thickness: 5.27 mm
Tourbillon diameter: 12.40 mm
Balance wheel diameter: 9.12 mm
Jewels: 19
Balance wheel: Glucydur®, 2 arms and 4 setting screws, moment of inertia 11.50 mg•cm² , angle of lift 53º
Frequency: 21,600 vph (3 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: KIF Elastor KE 160 B28
Barrel shaft: nickel-free Chronifer® (DIN x 46 Cr 13 + S) with the following characteristics: stainless - antimagnetic - suitable for tempering