The Master Lock Large Biometric Security Safe is ideal for protecting precious valuables and electronics against theft. It has a solid steel construction, 2 steel live-locking bolts and a concealed hinge for more protection against attacks and prying attempts. The biometric lock allows you to store up up to 30 fingerprints, so that no memorisation is required. A battery jump kit and the override key make sure you can always access your safe, even in the case of flat batteries. Inside the safe there is an interior light and carpeted floor that keeps the contents protected from scratches during storage. Supplied with bolt down hardware and 2 x override keys. Requires 4 AA alkaline batteries (not included) . Specifications: Exterior Dimensions (HxWxD) : 19.5 x 43 x 37cm. Interior Dimensions (HxWxD) : 19.2 x 42.7 x 31cm. Technical Specs Exterior Dimensions (HxWxD) : 19.5 x 43 x 37cm Interior Dimensions (HxWxD) : 19.2 x 42.7 x 31cm