I used it very carefully. However, please refrain from purchasing if you are looking for something in new condition. It is described as "no noticeable scratches or dirt." This means there are minor signs of use, scratches, and dirt, but they are not noticeable. The dirt can be wiped off. The current wrist circumference is approximately 18cm. (Adjustment links are not included.) Only the main unit is included. ocw-t150-2ajf