Breitling Aviation Chronograph Series, brushed front and side, 60 tooth marks engraved on the bezel, arrows and scales can be used for timing, bezel coin grooves and lug bevels are polished, showing the details in place, simple and stylish black and blue dial, Arabic numerals and central three-hand echo, making time indication clearer and more intuitive, Super-LumiNova luminous digital hour markers and hands, so you are not afraid of the dark, retro and energetic style, making this watch easy to go in and out of various occasions, watch diameter ~41mm