Reference:

• 110.633, Calibre 12, dark blue dial
• 150.633, Calibre 15, dark blue dial
• 740.633, dark blue dial (1974)
• 11633 MHT Tachymeter (fixed), slide rule, black dial (1977)

Movement:

• Self-winding chronograph movement Calibre Heuer 12 (later Heuer 15), 21,600 A/h
• Incabloc shock protection
• 17 jewels
• Power reserve 45 h

Case:

• Stainless steel
• Ø 45.5 mm, H 15.5 mm
• Mineral glass
• Crown at 9 h
• Screw-in back
• Waterproof to 10 atm

Dial:

• Dark blue (11633 MHT black)
• Two totalisers
• Indices and hands with luminous material tritium

Functions:

• Hours, minutes
• Small seconds at 9 h (Calibre 15 at 10 h)
• Date bei 6 h
• Chrono function with 2 counters central stop seconds and 30-minutes counter at 3 h
• Slide rule

Bracelet:

• Cowskin leather strap with tang-type buckle or stainless steel bracelet

Prize:

• According to condition and model approx. 1.200-2.500 €