Pioneer Collection -  
 

pioneer
TachyTele

The Pioneer TachyTele features in addition to the stop function two practical scales which are easily readable against the black dial, thanks to their red finish: the tachymeter scale for measuring average speeds is incorporated in the centre of the dial in a spiral formation. As this scale allows for a total of three revolutions of the stop indicator hand, it considerably extends the measurement range, enabling even relatively slow speeds of 60 km/h down to 20 km/h to be measured. The telemeter scale, which is printed on the peripheral edge of the dial, is used for measuring distances, taking into account the speed of sound. 

Movement: Modified automatic chronograph movement (bicompax), based on the Valjoux 7753 calibre, asymmetrical button arrangement; 28,800 vibrations per hour, 4 Hz; 27 jewels; power reserve of min. 42 hours 
Functions: Small seconds at 9 o’clock, 30-minutes counter at 3 o‘clock, tachymeter scale in the centre, telemeter scale on the peripheral edge
Case: Stainless steel; red reset button; fluted, bidirectional rotating bezel with red marking; convex, internally anti-reflective sapphire glass; screwed-down case back; large crown with deep bevelled edge; diameter 40 mm, height 15 mm; water-resistant to 100 m/10 bar 
Dial: Black; Super-LumiNova®-coated, luminous numerals and hands
Strap: Calfskin with riveting; pin buckle made from stainless steel 

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