Designed for use in cars, RVs, and boats, this USB car charger with voltage display offers a convenient and efficient way to charge your devices. The central control switch makes it easy to operate, while the dual USB ports provide ample charging options. The voltage display helps you keep track of your battery's status, ensuring you up on the road. Features -Color:Black -Material:ABS -Size:15.00X7.00X4.20cm/5.89X2.75X1.65in -Dual device charging: equipped with dual usb ports, this charger allows you to charge two devices simultaneously, ensuring your gadgets are always ready for use -Wide voltage compatibility: supports 12v-24v input, making it suitable for a variety of vehicles including cars, rvs, and boats, providing versatile charging options -Centralized power control: features a central control switch for easy and convenient operation, allowing you to manage power distribution with a simple touch -Real-time voltage monitoring: comes with a builtin voltage display that provides monitoring of your vehicle's voltage, helping you keep track of your battery status -Multifunctional design: designed with multiple functions to meet different needs, this combination unit is ideal for those who require a versatile Package list: 1 x switch control 4 x screws 6 x blue accessories