In order to pay tribute to the 70th anniversary of the birth of the Comas series, Longines recently launched three new Longines Comas Recreation Series Center Power Reserve Display Watches, which are inspired by the Comcas series launched by Longines in 1959, while retaining the needs of modern wear, to restore the design of the original 1959 watch to the greatest extent, with obvious retro style.
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The power reserve display, also known as the energy indicator, is a device that intuitively displays the power of the watch, through which it can clearly read the time when the watch can continue to run precisely. However, while most of the power reserve displays are designed in a fan-shaped window or hand display, Longines' Comas Revival Center Power Reserve Display is placed in the center of the dial to display the power reserve with a double-rotating dial, which is a very special design invented by Longines.
In the center of the double rotating dial is a wide baton marker with Arabic numerals and dots to record the power reserve time from 0 to 64 hours. Today, we're going to get a hands-on demonstration of how the new Comas Revival Center Power Reserve Indicator can be fully wound manually.
First of all, the watch is powered by the L896.5 automatic movement, which can be wound by wrist movements, and if it is not fully wound by wrist movements, then we can do it manually. You see, when we turn the crown upwards, the bidirectional rotation dial in the center of the dial rotates clockwise to the right, which means that the winding begins, and when the baton mark in the center of the dial points to the number 64, it means that the winding is complete. In this case, if we keep turning the crown, we can see that the baton mark in the center of the dial points to the 64 o'clock and rotates with it, so that we can place the number "64" in any position we want, representing the full wind, without worrying about damage to the mainspring from overwinding.
If we leave the watch still for a period of time, we can observe that the central dial with the baton markers on the dial will continue to rotate clockwise, and the time indicated by the baton markers is the time remaining power. For example, the front of the baton mark now points to position 24, which means that the remaining power reserve of the watch is 24 hours.
The power reserve display can accurately display the kinetic energy of the internal spring of the watch, effectively avoiding the lack of kinetic energy that causes the watch to run inaccurately, which is one of the most practical functions of the mechanical watch function.