While maintaining the practicality of the triple sensor and tough solar, the case size has been reduced and the weight has been reduced. It has a plastic bezel shape that does not easily get caught in the cuffs, and has a sharp design. In addition, the texture is enhanced by the metal parts that shine from the inside of the bezel. A lightweight plastic button is used for the direct key on the right side. In addition to the button guard, each button has a line color padding in the function name to prevent erroneous operation. Color filling is also designed on the front buttons on the 12 o'clock and 6 o'clock sides, which is useful for orientation measurement. Highly legible fonts are used for the liquid crystal display to improve the readability of various displays when the light is on. In addition, a Dura soft band that is easy to wear even when used for a long time is adopted.