Glashütte Original has taken the traditional perpetual calendar complication and put it inside a contemporary watch with a unique skeletonized dial and layout.

The Senator Excellence Perpetual Calendar Limited Edition is presented in a 42 mm x 12.8 mm white gold case, powered by in-house automatic caliber 36-02, which measures 32.2 mm x 7.35 mm, beats at 4Hz, has 49 jewels, a variable inertia balance wheel with 4 gold regulation screws, and a silicon balance spring. The power reserve is an impressive 100-hours.

Through the caseback, you can see the nicely finished movement which features polished steel parts, polished/blued screws, three-quarter plate/ balance cock/rotor with Glashütte stripes, beveled edges, and a skeletonized rotor 21K gold oscillation weight.

Visible in the center of the openworked dial is the back of the mainplate which has an intricate guilloche decoration, with blued hour, minute, and second hands stacked in the center.

On the perimeter of the opening is a varnish anthracite chapter ring which has rhodium-plated hour markers and a printed railroad minute/second track. Protruding from the chapter ring, towards the center of the dial, are all of the perpetual calendar functions: day, date, month, moonphase, and leap year.

Glashütte Original has done a good job combining the perpetual calendar function with a contemporary aesthetic and unique skeleton dial, all with a modern movement that boasts a 100-hour power reserve and high-end finishes.

The Senator Excellence Perpetual Calendar is limited to 100 pieces. Water-resistance is 50 meters. (Ref. W682020325)

Retail is $37,500.