The Plantronics Micro USB AC Adapter Power Supply is a versatile charger adapter designed for use with cell phones and other devices that require a micro-USB connectivity. The sleek black adapter is compact and perfect for both home and travel use, with a 4 ft cable length for convenient connection. With a voltage of 5V, this wall-mounted adapter provides reliable power supply for your devices, making it a must-have accessory for those on the go.