The Vaultek Slider Series SR20 Pistol Safe with Bluetooth Steel Black offers a highly interactive experience from your smartphone within Bluetooth range of the safe. New features and redesigned UI for managing safe and monitoring activity. Bluetooth can be toggled on/off using the available hotkeys if desired and still maintain all other safe functions. A rechargeable lithium-ion battery provides power up to 4 months, and charges in 2.5 hours with the included micro-USB charging kit.