Cartier, Ballon Bleu series, model: W69012Z4, an unused item, partially retains the original film. 42mm in diameter, automatic mechanical, automatic movement, 42-hour power reserve. Silver-plated guillot-shaped dial with blue steel hands, Roman numeral hour markers, stainless steel bracelet with a solid case back design, date display at 3 o 'clock position, classic blue Ballon crown set with synthetic spinel.