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RONDA mastertech
Caliber 8040.B – 15'''
Functions
3 eyes
Chronograph
Center stop second (1/1
sec)
1/10 seconds up to 30
minutes
30 minute counter
10 hour counter
ADD and SPLIT functions
Big date
Small second
Technical Specifications
Diameter Total 34.60 mm
Case fitting 33.80 mm
Movement height 5.60 mm
Height over standard battery 5.60 mm
Movement rest 0.60 mm
Height over stem 3.30 mm
Length of stem travel 1.00 mm
Force to push the stem for screwed crown 10 / 15 N
Stem thread 0.90 mm
Standard battery 395
Standard battery life 48 months
Battery voltage 1.5 V
Current consumption – typical 1.48 μA (Date
Mechanism not in
Gear)
Current consumption – maximum 2 μA (Date
Mechanism not in
Gear)
Useful torque second – typical 6 μNm
Useful torque minute – typical 300 μNm
Useful torque center stop second – typical 7 μNm
Operating temperature 0 - 50 °C
Instantaneous rate -10/ +20 sec/month
Resistance to magnetic fields 18.8 Oe
Resistance against shock NIHS 91-10
Watch production
Drawing Casing ring (standard, PDF)
Drawing Dial (stem 3h, calendar 12h, PDF)
Drawing Dial (stem 3h, calendar 6h, PDF)
Drawing Hand fitting (hand height 1, PDF)
Drawing Stem
Casing information (PDF)
User's manual
User's manual (PDF)
Watch repairs
Technical instruction as of code M (PDF)
Date: 25.11.2019 www.ronda.ch Page: 2
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