This innovative mechanical timepiece from Swiss luxury watch brand KENNSEN incorporates two popular horological complications: Chronograph and Annual Calendar.
Despite the complexity involved in such complication watches, Kennsen’s Annual Calendar Chronograph is simple to use, thanks to an innovative mechanism that overcomes the difficulty of building an entirely new complication in the confines of the chronograph’s reduced space.
Designed in-house, Kennsen’s Annual Calendar mechanism drives a date indicator at 3 o’clock, a month indicator, which is in the same plane as the date and on the left of the central axis, and a legible but unobtrusive Day/Night display positioned in the minute counter subdial to aid adjustment.
For this timepiece, KENNSEN has developed a co-axial calendar system in which the month wheel and display are co-axial to a special pipe built around the central axis of the watch. The month wheel itself then acts as an axis around which the co-axial year wheel turns. The year wheel governs the system though a unique internal tooth.
Protected by two patents, this new design concept ensures simplicity, low part count, svelte dimensions and very efficient performance. The svelte dimensions (30.0mm in diameter and 1.3mm in height) ensure that the watch is comfortable to wear. The few moving parts ensure efficient performance. The calendar is easily adjustable by the crown and ensures ease of use.
Kennsen Annual Calendar Chronograph is equipped with the Calibre KV775C, the in-house movement based on the iconic Valjoux 7750 self-winding movement.
The movement is adjusted to a tolerance up to -2 to +6 seconds per day and in five positions. The movement is finely decorated with Côtes-de-Genève and snailing on the plates. Movement screws have been replaced to complement these finishes. The matt and anthracite finishing of the rotor adds an interesting counterpoint to the plates.
The Day/Night display complication shows whether the watch is synchronised to a.m. (white) or p.m. (dark). It insures that the watch is set correctly, thus avoiding the irritation of a date change at noon. Referencing the Day/Night display before a manual date adjustment can also prevent damage to the watch as manual date adjustments should not be undertaken during the dark night hours when the gears are in mesh.
Designed in house by Kennsen and manufactured in Switzerland by Victorinox Company, the watch case measures 42mm diameter; 49mm across the lugs; 13.4mm height. Crafted from superior quality of stainless steel (316L1.4435 grade), the watch case ensures ease of use while wrist-friendly lugs provide a comfortable and secure fit. The case has a water-resistance of 50 metres / 165 feet.
The scratch-resistant sapphire crystal in the case-back gives a view of the movement and rotor. Each watch is individually numbered. The pusher sleeves are a rarely seen touch and are horizontally brushed by hand.
While the front and back bezels are hand-polished, a horizontal brushing (also by hand) has been given to the case-middle. The case chamfers provide a sporty yet elegant feel.
Manufactured in Porrentruy in Switzerland, the large and well proportioned dials come in either black or Kennsen Palladium shades. The special galvanic treatment gives the dials their depth and changing light conditions bring different nuances to the dials.
The indices are applied, and the dial itself has three levels with circular grain and matt finishing. The outer ring has a telemeter scale in miles and kilometres. The useful Day/Night display is positioned inside the minute counter. The date is at 3 o’clock and the month to the left of the main axis.
The Kennsen Annual Calendar Chronograph is fitted with a custom made and top grade alligator leather strap hand-crafted by Hirsch. Each Kennsen watch is delivered in a hand-made leather wallet.
Model: Kennsen Annual Calendar Chronograph
Chronograph function with hours, minutes, seconds
Timekeeping with hours, minutes, small seconds
Annual Calendar with date and month displays
Telemeter in miles and kilometres
Hacking small seconds
Calibre KV775C Automatic
48 hr power reserve
Frequency: 28’800 vph (4 Hz)
Three-part hand-polished and brushed stainless steel
Diameter: 42.0 mm
Lugs: 49.0 mm
Rectangular pushers with hand-brushed sleeves
Front glass: Domed, anti-reflective, scratch-resistant sapphire crystal
Case back: Flat scratch-resistant sapphire crystal
Water-resistant to 5 ATM
Three level dial with galvanic plating and matt finishing
Raised, sun-ray bushed telemeter scale
Sunk, circular brushed sub-dials
Top grade Alligator
20 mm at the lugs, 18 mm at the buckle
Galvanic Rhodium treatment
More details at https://www.kennsen.com