DGL HBM520 Bluetooth Headset The LG HBM520 Bluetooth Headset is designed for customers who want to enjoy sleek, comfortable, ergonomic ear bud, hands free communication on their handset. The HBM520 is lightweight and offers fast and easy pairing, multiple communication options and convenient volume control. The user friendly HBM520 includes options such as voice dialing, last number redial, call waiting, call reject and auto reconnect.