Omega constellation 27mm and 24mm, which one looks better?

The wrist outer ring with timing praise function will be engraved with numbers such as 500/400/350, which will decrease in turn. These physical quantities represent speed in km/h; This bezel is called a speedometer, as shown in this Epperl watch.

For example, when a vehicle is driving on an expressway, there are milestones on both sides of the road, and the distance between the two milestones is generally 1 km. Take the method of measuring vehicle speed as an example. When the vehicle moves forward with the roadside mileage sign as the reference point, it starts to grab the timer. When the vehicle reaches the next milestone, the timer stops, and the missing position of the timer pointer on the speedometer scale is the speed of the vehicle. For example, 1000 meters takes 45 seconds, which can be converted into 80 kilometers per hour.

When you are on a high-speed moving object, such as a motor vehicle, the speedometer is used to calibrate the constant speed. If there is no milestone on the road, you can also look at the odometer on the vehicle to locate one kilometer. When you pass the 1 th milestone of the car, press the button to start the stopwatch. Stop timing when the vehicle passes the second milestone. The numbers on the quasi-meter corresponding to the position where the hands indicating seconds are missing on the chronograph are uniform. For example, if the hand indicating the second on the clock is missing at the 70th quasi-meter, the speed is 70km/h ... For example, a car traveling at a fixed constant speed of one kilometer or one mile. Now many brands have this function, such as Omega, Longines, Davos, CYS and so on.