[About the Product] This is a Longines Ultra-Chron. Manufactured from the late 1960s through the 1970s, this model features a high-beat movement operating at 36,000 vibrations per hour (10 vibrations per second)—the cutting-edge technology of its time. The chronometer-certified models feature exceptionally intricate construction, such as the use of high-density metal on the outer rim of the rotor to enhance winding efficiency. It is highly regarded in the antique market as a model of historical significance. We offer high-quality vintage watches. 【Appearance】 ・No notable damage ・Non-original strap 【Function】 ・Operates normally. *Please note that we do not perform precise mechanical measurements of daily rate accuracy for automatic movements. While there are no significant deviations, we ask for your understanding in advance. *As this is a vintage watch, water resistance is not guaranteed. [About the Product Description] The product description is based on our subjective assessment. It is often difficult to describe the condition of vintage items in words alone. We will upload as many images as possible to highlight any points of concern, so please review them carefully. 【Important Information】 ・Import duties, taxes, and fees are the responsibility of the buyer. Please check with your country’s customs office regarding these additional costs before bidding. ・Please allow approximately 1 to 2 weeks from shipment until delivery.