1500 steel belt [new model debut] Longines LONGINES pioneer series, the pioneer of watches launches a completely "new literal" flyback chronograph watch! 1 Diameter 42 mm, two-way rotation with green, brown, black and blue ceramic matte bezel, Arabic numerals with luminous black holes separated by black holes, synchronized with the official website. 2 Dial available in green, brown, black and blue, 3 o'clock There is a chronograph dial at 9 o'clock, a small seconds dial at 9 o'clock, and a large chronograph second hand at the center. The "FIyback" flyback function is marked at 6 o'clock on the dial, which is a very convenient chronograph. 3 The sapphire crystal mirror is slightly arched, with anti-glare coating on both the inner and outer surfaces, and the two-way rotation is precise and smooth. The watch is equipped with a screw-in crown that is easy to grasp and adjust, and the sealed case back is made of 6 diamonds. It is fixed with screws and has excellent waterproof performance. 4 different versions of stainless steel bracelets, green and brown calfskin straps and NATO blue fabric straps, and original folding buckles, suitable for different styles of wearing needs. 5. It is equipped with a 7750 movement modified from the original genuine L791 self-winding movement, which can provide a power reserve of up to 68 hours, and is a multi-functional mechanical watch certified by the Swiss Official Observatory (COSO) as a precision chronometer,,,longines,cowhide