This Wolf Designs Cub Single Watch Winder has a black pebble vegan leather finish, chrome finished hardware, and a single winding module. This bi-directional winder features a 10 second start delay, 900 turns per day, and patented rotation programs including intermittent rotation with pause and sleep phases pre-programmed. The cuff is designed to fit watches up to 52 millimeters. This winder has the option to run either on AC power or AA batteries. Batteries are not included.