Watch Facts

Quiz: 2025.11.22 Quiz (Beats Per Hour)

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A. Lange & Söhne special edition (2005) Langmatik Wempe

The Gangreserve was issued in 2005 to commemorate the 100th anniversary of the founding of Chronometerwerke Hamburg. Chronometerwerke Hamburg GmbH was founded in 1905 by seven prominent Hamburg shipbuilding firms to design and manufacture high precision nautical chronometers. The company was purchased in 1938 by Herbert Wempe and the name was changed to Wempe Chronometerwerke. During the second World War, Wempe Chronometerwerke collaborated with A. Lange & Söhne to produce standard chronometers for the German navy. In 2005, eleven watch companies issued limited editions to celebrate the 100th anniversary of the founding of the original company, with all the LEs being sold exclusively through Wempe. This particular model was produced; 100pcs in yellow gold, 100pcs in Platinum and 25 pcs in rose gold. Automatic Lange Cal. L921.6, the superlative Sax-0-Mat movement with zero seconds reset. 343 parts, 42 jewels, and a gold rotor with platinum edge. The Sax-0-Mat beats at 21,600 vph, with a power reserve of 48 hours. The Platinum 950 is in 40.6mm, price at the time was US$39,700.00

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Grand Seiko Hi-Beat 36000 Professional 600m Diver’s SBGH255 (2017)

is the first ever mechanical diver’s watch from Grand Seiko. 46.9mm case in Titanium. Automatic 9S hi-beat caliber and remarkable anti-magnetism of 16,000 A/m. 55 hours power reserve. Precision of -3 to +5 seconds a day, superb legibility, high durability, due to the high-intensity titanium case and bracelet and the distinctive clean edges that only Zaratsu polishing can achieve. The case is designed for saturation diving, with the valve-free helium resistance that results from Seiko’s innovative technologies, including the heavy duty construction and the L-shaped gasket. The grooves on the rotating bezel are extended for secure use, even with thick gloves. The bracelet has a sliding extension setting to accommodate pressure changes. Priced at 10,990CHF

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Longines ULTRA-CHRON (2022)

This is a tribute to the 1968 ULTRA-CHRON Diver, the first dive watch to be equipped with a high-frequency movement at the time. This re-edition model has a stainless steel case in 43mm. Automatic calibre L836.6, a high-frequency “in house” movement. “high-frequency” is defined when the balance wheel oscillates at 36,000 beats per hour (10 beats every second) or higher. LONGINES pioneered in 1914 (to time 1/10th of a second) and 1916 (to time 1/100th of a second), improved precise timekeeping. From 1959 onwards, LONGINES made use of the high-beat-movements to increase the accuracy of its watches. Power reserve is 52 hrs Priced at CHF3,500

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Zenith El Primero 50th anniverisary edition A384 Revival (2019)

Case is in stainless steel at 37mm. Automatic El Primero 400 caliber, high frequency 36000bph chronograph movement. Power reserve is at 50 hours. Priced at 7,900.00CHF

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Chopard Alpine Eagle Cadence 8Hz (2023)
•Case is in 41mm diameter x 9.75mm thickness; grade 5 titanium with brushed and polished decorations.
•Automatic calibre 01.12-C has 210 components, that beats at 8Hz frequency or 57,600 BPH.
•Chronometer-certified COSC.
•Power reserve is 60hrs
•Priced at USD20,300
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Armin Strom Dual Time GMT Resonance Manufacture Black Edition (2025)

Stainless steel case in 39mm diameter and 9.05mm thickness, sapphire crystal front and display back with anti-reflective treatment, water resistant to 50m. Twin black grenage time dials with snailed chapter rings, polished baton indices, rhodium-plated faceted hands, engraved sun/moon day-night indicators. Patented resonance clutch spring connecting two 3.5Hz balances at 12 o’clock, three-dimensional ratchet wheel at 6 o’clock. Powered by manual-winding calibre ARF22 with 231 components and 40 jewels, 25,200vph, dual barrels, 42-hour power reserve. Each crown sets its own time zone, including offset zones like +5:30 or +8:45. Limited to 50 pieces Priced at CHF 95,000

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Dominique Renaud DR01 (2018)

One of the main focus here is the replacement of the traditional Swiss lever escapement with the Blade Resonator; which is incredible at reducing friction. The hairspring itself is replaced by a short spring shaped like a bow, on the outside of the blade resonator. This short spring pivots between two opposing blade edges, making a very low angle oscillation, the friction generated is very low; which means power efficiency is very high. This system is completely new and will make revolutionary changes to the industry. Low amplitude (30°) with high frequency (5Hz) offers great accuracy, in fact Renaud believes it can achieve far superior accuracy than COSC. Using a standard mainspring, it can achieve an incredible power reserve of 14 days. The case is made of titanium C shape and the movement is housed in a sapphire cylinder that can rotate 360°, allowing the wearer to choose which part of the watch to admire. Unique piece. Priced at 1,000,000.00CHF

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Dior Chiffre Rouge Chronograph (2024)

Stainless steel case with Black DLC coating in 41mm with a 14.3mm thickness, water resistance to 100m, sapphire crystal with display caseback. Automatic El Primero high frequency (5Hz), integrated chronograph movement with column wheel and horizontal clutch. Each comes with a quick interchange strap system.

Power reserve is 48 hours

Priced at €13500

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Hermès Arceau Duc Attelé (2024)

Case is in 18k rose gold in 43mm, sapphire crystal with display case back; water resistant to 30m. The watch is one of Hermes’ rare grand complications; an all new hand-wound Calibre H1926, with a central triple-axis tourbillon and a minute repeater, running on a 5Hz balance. The movement is an extensive development by Le Cercle des Horlogers. Technically complicated but also keeping its elegance, emphasizing Hermès’s rich equestrian heritage, the watch dial and movement details nod to the Duc Attelé carriage, marrying technical mastery with thematic elegance. And if you take a deeper look at the movement construction, you can see it mimic a horse and carriage, and when the minute repeater is activated, the horse will move.

Power reserve is 48-hour.

Limited to 24 pcs

Price on request

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IWC Portugieser Constant Force Tourbillon (2017)

Platinum case in 46mm, manual winding movement with 96 hours power reserve, 2.5Hz. Patented constant force escapement.  Priced at US$260,000.00

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