To celebrate its 21st birthday in 2016, TimeZone collaborated again with Habring² to present the Erwin 21 Jumping Seconds, reference TZ21.

• Manufacture in-house Caliber A11S mechanical hand-wound movement
• Diameter: 30 mm
• Height: 5.7 mm
• Centre-mounted hour hand, minute hand and jumping second hand
• 28,800 half oscillations per hour (4Hz)
• 48 hours of power reserve
• Fine adjustment via tangential screw
• Amagnetic escapement with a Carl Haas balance spring in chronometer quality
• KIF shockproof pursuant to DIN and NIHS
• 21 rubies
• Elaborately refined by hand with polished edges, decorative grinding, perlage, etc.
• 65 service-relevant individual parts (126 parts in total)

Dial

• galvanized metal 
• Dial markings and numerals printed in midnight blue
• Hand brushed center dial
• Silvery-gray hour sector dial
• Polished stainless steel divider ring
• Silvery-gray minutes railway five minute divisions
• Polished and heat-blued steel feuille (leaf-shaped) hands

Case

• buckleDiameter: 38.5 mm
• Height: 9 mm
• 316L stainless steel in three parts with brushed and polished finish
• Stepped bezel with brushed and polished finish
• Flat sapphire glass coated with anti-glare on both sides
• Double crown seal, sapphire base
• Water-resistant to 5 bar (50 metres)
• Simple blue calf leather strap with tang buckle

Strictly Limited

• Limited edition of 21, each individually numbered
• Presented in a handmade Oregon-pine box with papers and spare parts (caseback and extra hands)