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Trainmaster Cannonball CM1052D-S7J-WH



Ball designers took a bold step to modify the movement from 30 minutes elapsed time to 45 minutes chronograph. Additional jewels were added to ensure the smooth running of this complication through lowering the friction between surfaces, resulting in a complex 49-jewel movement. Compared with a typical movement of minimum 17 jewels, the creation of this special caliber is a labor-intensive process that requires greater skills. The sapphire exhibition case back of the Trainmaster Cannonball gives you a glimpse into this mechanical beauty.

Special order request may take up to 3 weeks delivery.

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◆ Automatic caliber BALL RR1401-SL
◆ Patented SpringLOCK® anti-shock system

◆ 14 micro gas tubes on hour and minute hands and dial for night reading capability
◆ Chronograph with accumulated measurement up to 45 minutes
◆ Hours, minutes, subsidiary seconds and date

Shock resistance
◆ 5,000Gs

Water resistance
◆ 50m/160ft

◆ Stainless steel
◆ Ø 43 mm, height 14.80 mm
◆ Anti-reflective convex sapphire crystal
◆ Sapphire crystal case back

◆ Stainless steel bracelet with folding buckle or crocodile leather strap with standard or folding buckle

◆ Black / White

Additional information

Dial color

Black, White

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