Almost unused, but it's quite old (purchased at a consumer electronics store). It has been stored as is, so there are scratches on the chain. There is no dirt. The battery is dead, and I haven't checked the operation. There are no instructions or box. Self-measured: Wrist circumference: approx. 17cm Chain width: 2.7cm Material: Titanium The wrist circumference can be adjusted with the holes in the joint (image 7). It can be extended by about 6mm. Please understand the above before purchasing.