RONDA mechanicals

R01-02
4.2 mm
12½''', 28.20 mm
2 hands
Small second
Date

Product Informations

Product Specifications

Type Mechanical movement
Line mechanicals
Caliber R01-02
Size 12½'''
Version Swiss Made 25 jewels
Standard hand fitting height 2

Functions

Small second
Date
2 hands

Features

Uni-directional automatic winding with ball bearing

Silicon escapement and spiral

Runing time typically 80 h / minimum 72 h

Winding mechanism

Winding mechanism Automatic
Main spring Bio-Flex / Nivaflex Plus
With winding stem TurnsMax. speed
Manual winding 85100
Self winding mechanism Turns per minuteWinding time
Automatic winding with Cyclomotion 4*min. 7h
Automatic winding with Chappuis 22*min. 2.5h
* Note the direction of rotation

Specifications

Technical Specifications

Diameter Total 28.60 mm
Case fitting 28.20 mm
Movement height 4.20 mm
Movement rest 1.30 mm
Height over stem 1.80 mm
Length of stem travel 0.90 mm
Stem thread 0.90 mm
Stem max Ø 1.50 mm
Frequency: vibrations per hour 25'200 A/h (3.5 Hz)
Power reserve typ. 80 h / min. 72 h
Date switching duration <30 min.
Operating temperature 0-50 °C
Resistance against shock NIHS 91-10

Performances

Escapement
PerformanceElaboréTopChronomètre
Running timemin. typ. 80 h / min. 72 h
EscapmentSwiss silicone escapment
Balance springSilicone
Fine timing devicewith screws on the balance wheel
Shock absorberKIF / Incabloc
Barrel springBio-Flex / Nivaflex Plus
Regulation
PerformanceElaboréTopChronomètre
Positions0hCH, 6H, 9HCH, CB, 6H, 9H, 3HCH, CB, 6H, 9H, 3H
Average value of rate0 ... 14 s/d0 ... 8 s/dCOSC criteria / ISO 3159
Max. divergence all positions20 s/d15 s/dCOSC criteria / ISO 3159
IsochronismCH 0h - CH 24h± 15 s/d± 10 s/dCOSC criteria / ISO 3159
Max. amplitudeCH 0h315°
Min. amplitude6H 24h200°
Lift angle53°
Adjusting markposition CH at 0h
0.8 ms0.6 ms0.6 ms
Stabilisation time / rate resumption 20 s
Recommended value
20 s
Recommended value
20 s
Recommended value
Integration time / Measuring 40 s
Recommended value
40 s
Recommended value
40 s
Recommended value
Temperature 23 °C23 °Cas per COSC / ISO 3159
The limit values are subject to interpretation: 95% of the pieces delivered in a lot must be within the specified limit values.
All checks are made without the calendar in function. The check at full winding, referred to as 0h, has to be done after 1 to 3 hours running. The check indicated as 24 h takes place 24 to 25 hours after full winding.
When checking the instaneous rate and the amplitudes, the inherent tolerance of the measuring instruments and the influence of temperature variations and the atmospheric pressure must be taken into account.

Decorations

Matte

Bridges with matte finish
Bimetal Oscillating weight, matte
Nickel-plated

Brushed

Bridges vertically brushed
Monobloc Oscillating weight with Geneva stripes
Rhodium-plated

Geneva stripes

Bridges with Geneva stripes and colimaconnage
Open Oscillating weight
Rhodium-plated

Oscillating weights

Standard Bimetal

Bimetal Oscillating weight, matte,
Nickel-plated
Optional custom branding

Standard Monobloc

Monobloc Oscillating weight with Geneva stripes
Colimaconnage bevel
Rhodium-plated
Optional custom branding

Geometric Monobloc 4 openings

Monobloc Oscillating weight with 4 openings,
matte, colimaconnage bevel
Rhodium-plated
Optional custom branding

Geometric Monobloc 5 openings

Monobloc Oscillating weight with 5 openings,
matte, colimaconnage bevel
Rhodium-plated
Optional custom branding

Geometric Monobloc 6 openings

Monobloc Oscillating weight with 6 openings,
matte, colimaconnage bevel
Rhodium-plated
Optional custom branding

Custome made - Your Design

Custom-made Oscillating weight,
based on your design

Technical documents

Terms of warranty

Terms of warranty

Watch production

Drawing Casing ring
Drawing Dial
Drawing Hand fitting
Drawing Stem
Casing information
Manual winding test

User's manual

User's manual PDF with folding marks

Watch repairs

Technical instruction
No PDF available
No Interactive Version available

Movement holders

Movement holders

Various info

Various info

Product Symbol

R01-02

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