Rolson Dual USB Phone Holder and Charger The clever flexible design of this in-car phone charger means you can keep your phone connected to your car's 12V charging socket whilst viewing the screen at a comfortable angle, so you'll never lose charge when using your sat nav. The socket has a dual USB port for charging two devices at once, so it's great for extra devices and letting passengers charge up. Maximum 1A output Connect using your phone USB cable Ball joint connection for 360o rotation Spring-loaded clamp for secure grip