This is a vintage FRECO pendant watch. It is a hand-wound watch and can be wound, but it is uncertain whether it keeps accurate time. 17 JEWELS ADJUSTED FRECO SWISS Watch diameter: Approximately 2.5cm Chain length: Approximately 70cm The jewel? appears to be deformed or crushed. There are signs of aging such as scratches, small marks, chips, and discoloration, so please understand this before purchasing. Although it is not a new product, I will also include the case that I used to store it at home.