It is currently operational, but I am unsure about detailed operational checks such as time differences. Please consider the current condition. Returns are not accepted to prevent product substitution. Please understand that this is a "no claims, no returns, no refunds" sale. Black model of the LUM107 waterproof analog wristwatch with a nylon strap. - Brand: LUM107 - Color: Black - Strap Material: Nylon - Dial Type: Analog - Features: Waterproof Thank you for viewing.