SentrySafe SFW123GDC Fireproof Safe and Waterproof Safe with Digital Keypad 1.23 Cubic Feet Fireproof safe is UL Classified to endure 1 hour at 1700F and keep interior temperatures safe for irreplaceable documents, valuables, DVDs, and USBs; ETL Verified to withstand a 15 foot fall during a fire and remain closed Waterproof safe is ETL Verified for 24 hours of protection in water up to 8 inches deep offering peace of mind in the event of a flood; great holiday gift for new home owners, new parents, or newly married couples Set your own digital combination fire safe with secondary locking key for strong security; digital combination safe features four live-locking bolts, steel construction, pry-resistant hinge bar, locking drawer, interior light, and bolt down hardware Exterior: 16.3 in. W x 19.3 in. D x 17.8 in. H; door requires 14.75 in. of clearance to fully open; Interior: 12.6 in. W x 11.9 in. D x 13.8 in. H; large 1.23 cubic foot capacity; weighs 87 pounds For optimal performance, SentrySafe recommends the use of four high-quality, name branded, alkaline AA batteries with an expiration date of 8-10 years from the current year. Generic and rechargeable batteries often do not have the lifespan needed to support long term usage