Stuhrling Original Men's 150A.33452 Boardroom 'Symphony Maestro II' Multi-Function Skeleton Watch Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Reliable automatic-self-wind movement 20 jewels Skeleton master calendar with day, date, month, and 24 hour time indication Krysterna scratch resistant crystal Water resistant to 165 feet (50 M): suitable for swimming and showering