Description Designed for convenience and reliability, this external power supply box is great for ensuring the uninterrupted operation of your safe box and other electronic gadgets. Its portable size allows you to easily transport it and use it in different locations. Features -Color:Black -Material:Plastic -Size:27.00X6.50X1.80cm/10.61X2.55X0.71in -Quick charging capability: preventing inconvenience caused by depleted batteries during emergencies. -Wide compatibility: designed to work seamlessly with various brands and models of electronic locks -Better security: ensuring your valuable items are well-protected from access -Portable size: its small and lightweight construction allows for easily transport and installation in various settings -Battery Box: the backup battery box provides long-lasting power, ensuring continuous operation of your device -Wide compatibility: designed to fit various brands of safe boxes and door lock Package list: 2 x external power boxes