This item is in impeccable condition, the strap has been adjusted to one size smaller to fit my arm. Unable to locate a certificate . Can provide box if required.. The Auth CHANEL J12 H1007 White Men’s Wrist Watch boasts a stainless steel and ceramic strap, a 41mm ceramic case, and a white dial with silver accents. This automatic movement watch features a bracelet band and includes three extra links. The CHANEL J12 model, renowned for its sleek and elegant design, is suitable for men and boasts a working accuracy of within +-10 seconds per day. The serial number can be provided to confirms its authenticity as a genuine CHANEL timepiece, exuding sophistication and style.