The Sangean Digital AM/FM-RDS/Bluetooth Clock Radio with USB Charger has worry-free battery backup in case of power outages. Built-in Bluetooth Version 4.1 Class II and NFC technology allow for easy pairing and connecting to your device with a simple touch of your device to the clock radio. It also delivers powerful audio with a ported bass tube specially designed for more bass and loudness compensation that gives better bass response characteristics and helps tit deliver sound beyond its size. Bass treble and balance controls let you further adjust the sound to your liking.