Longines has launched a new Flyback chronograph watch featuring a 42mm diameter case with a bi-directional rotating bezel, available in matte black and blue. The Arabic numerals glow in the dark, set against a black background. 1. The watch face comes in black and blue, with the chronograph sub-dial at 3 o'clock and a small seconds sub-dial at 9 o'clock. The central large seconds hand serves as the chronograph seconds hand, and the Flyback function is marked at the 6 o'clock position, making it a very convenient timing chronograph. 2. The sapphire crystal has a slight dome shape and is treated with anti-reflective coating on both surfaces. The bi-directional rotating bezel operates with precision and smoothness. This watch is equipped with a screw-down crown for easy grip and adjustment, while the sealed case back is secured with six screws, providing excellent water resistance up to 100 meters. 3. It comes with a stainless steel bracelet, a brown calfskin leather strap, and a NATO blue fabric strap, offering various versions to suit different style preferences. 4. It is powered by a modified 7750 movement, the original L791 automatic winding caliber, which provides up to 68 hours of power reserve and is certified by the Swiss Official Chronometer Testing Institute COSC for precision.