Sometimes, too busy, you may miss important meetings and forget about important holidays. In fact, a small change will be able to solve such a problem, such as wearing a mechanical alarm clock watch. It may not be as sexy as a tourbillon or as complex as a perpetual calendar, but for those exhausted CEOs, the mechanical alarm watch is very useful because it reminds directors of the timetable. For example, the following five mechanical alarm watch worth knowing. Blancpain Villeret Réveil GMT Blancpain Villeret Réveil GMT Blancpain GMT is one of the most classic series of watches, with mechanical alarm and second time zone display. The 3 o'clock dial is a 12-hour scale and double pointer for alarm timing and the timer button is located at 8 o'clock. The "On / Off" indication at the 1 o'clock position alerts the wearer whether the alarm is off. The alarm sounds from a hammer struck by a gong. The watch's GMT function indicates the second time zone by the central Okanagan snake pointer. The watch uses self-produced Blancpain Caliber 1240H self-winding movement, with a balance spring balance silicone, power reserve of 45 hours. In general, the watch with alarm clock, the movement equipped with two barrel wheels: one to provide power for the movement, and the other for alarm tapping mechanism storage power, while the movement of the automatic winding system for both . The Blancpain Villeret Réveil GMT is available in steel and rose gold models, with belts or steel belts for $ 24,700 to $ 55,700. Breguet Marine Royale 5847 Breguet Marine Royale 5847 with alarm function, a unique sports watch is also a good helper diver. The alarm function was designed to accommodate a depth of 300m underwater and alert divers to run out of air and return to the surface of the water. The watch is not only highly functional, but also features Breguet's elegant features: a hand-engraved rose pattern on the chocolate dial, and a 18-karat rose gold case and unidirectional bezel. Calendar window at 6 o'clock, power reserve indicator at 10 o'clock, and "alarm on" at 12 o'clock. The watch retails for $ 46,300. Glashütte original Glashütte Original Senator Diary Gratuity original Senator Diary (rose gold models) is the only alarm clock can be set more than 30 days in advance of the mechanical watch. It works like this: First select the date by pressing the button at 8 o'clock until the letter D (representing the date) appears in the sub-dial calendar window at 9 o'clock. Rotate the 10 o'clock crown until the pointer points to the date you want to set on the secondary dial. Press the button at 8 o'clock again to point "H" to the hour you want to set (the window shown at 6 o'clock). Rotate the crown again to set the hour at 15-minute intervals (00.15 -24.00). Press the button again to set the alarm (the "alarm" logo appears in the calendar window) and rotate the crown to wind it up. The alarm is powered by a separate barrel wheel, and the alarm is full even though the watch is unpowered. The alarm usually lasts for 1 minute. To stop or cancel the alarm, press the button until the "alarm off" symbol appears, and a black line crosses the alarm symbol. The Glashütte original Senator Diary uses a self-produced Caliber 100-13 caliber, consisting of 600 components, 340 of which are used for complex alarm / appointment modules. The watch is $ 39,000 for rose gold, $ 24,400 for stainless steel, $ 23,100 for stainless steel, $ 41,400 for white gold, and all Louisiana models for crocodile leather. Jaeger-LeCoultre Master Memovox Jaeger LeCoultre has repeatedly created a miracle in the field of watches, including the 1956 launch of the first automatic mechanical watch with alarm Jaeger-LeCoultre Master Memovox. The pioneering Caliber 815 was replaced by the modern Caliber 956, a modern version released in 2008. The Caliber 956 powers the Master Memovox (pictured above) with a vibration frequency of 28,800 vph and a power reserve of 45 hours, with a fast-change date mechanism. Jaeger-LeCoultre Master Memovox watches the diameter of 40mm, steel sections and rose gold models. The silver dial is an elegant, low-key interpretation of the Big Three, 12 o'clock, 6 o'clock, and 9 o'clock Arabic numerals, a calendar window at 3 o'clock and an arrow with a central dial indicating the time of the alarm. Sealed bottom cover with "Master Control" logo, indicating that the watch has undergone the most stringent quality inspection Jaeger-LeCoultre. Jaeger-LeCoultre Master Memovox Jaeger is priced at $ 11,100. Verne Vulcain 50S Presidents'Cricket "Pegasus" Pegasus Watch Vernal Vulcain may be a watch brand known for its mechanical alarm clock. The Vulcain Cricket watch is named after its alarm like a cricket chirp. Launched in 1947, it features the revolutionary Caliber 120 movement. The watch was quickly sought after and was favored by U.S. President Truman, Eisenhower, Johnson and Nixon. Because of this, Vergan changed the watch to the "presidential watch" such a domineering name. Later, Versailles has introduced a new version of the watch, including the limited edition Vulcain 50S Presidents' Cricket "Pegasus" Pegasus watch launched in 2014. Its large fire enamel dial is to commemorate the Chinese Year of the Horse, the dial Inscribed in the Greek mythology Pegasus. Watch with 42mm diameter sapphire lens rose gold case and transparent back cover. Inside take Vernigan Caliber V-20 modern movement, automatic winding, 31 drill, vibration frequency of 18,000 vph, double box wheel, power reserve of 42 hours. Several major features of the movement include: Geneva decoration, rhodium-plated and blue steel screws. The alarm rings for 20 seconds. Vulcain 50S Presidents' 'Pegasus' Pegasus watch is divided into two kinds of dials, one is the Pegasus in the mountains (pictured above), and the other is Pegasus soaring into the air, each limited edition 18, priced at $ 55,560.