This is a Casio Pro Trek outdoor watch. It's a model equipped with a thermometer, barometer, and altimeter. Regarding the appearance, while there is some minor aging overall, it's in relatively good condition. There are small scratches on the crystal. They are not visible when reading the time directly, but they can be seen depending on the angle and lighting. Regarding the wrist size, it's difficult to measure, so this is an approximate estimate: "When I (wrist size 17mm) wear it, there's about a finger's width of space." Regarding functionality, the barometric pressure sensor, temperature sensor, alarm sound, and EL backlight are all working. (The current accuracy of the sensors is unknown. Please calibrate them yourself.) It is currently running, but the battery level is unknown. Please consider that this is an old, used item and purchase it with the understanding that it is non-refundable and non-returnable.