Supports A2DP, AVRCP, GAVDP & GAP Bluetooth(R); Hands-free speakerphone with built-in microphone for Bluetooth(R)-enabled phones; Supports NFC for easy pairing; Aux input for connecting iPod(R), MP3 players or other digital audio players; .9" multifunction blue LED display; FM stereo receiver with PLL digital tuning ; USB port for charging iPhone(R)/iPod(R) or smartphone; Digital volume control; Leatherette handle & cabinet; 20V AC adapter or requires 4 AA batteries ; Dim: 5.51"H x 10.24"W x 3.07"D;