ROCK-SOLID CONSTRUCTION * Outside is constructed of 16-gauge steel. * Soft foam on the inside protects valuables. * High-Strength lock mechanism performs reliably, time after time. Features: 16-guage steel housing Foam lining inside Tamper-proof, spring-loaded door Battery power supply lasts 1 year under normal conditions Blinking low battery light Mounting gear included Interior courtesy light Power connection jack for external AC or DC power supply (adapter included) Dimensions: 10.1" x 7.9" x 14"