IRV63 is the official update of IRV62, it is added the feature of independent Zone 3 control and 3 speaker outputs,but keeps the same size as IRV62. 3 speaker zones / 7 Speaker Output 7x15 Watt. DVD Player plays CD, CD-R, CD-RW, DVD, DVD+RW, DVD-RW, MP3. Video format supported: DVD-Video, MPEG-4, VCD, JPEG. Audio format supported: CD-DA, MP3, WMA, Dolby.Zone 3 auido source is independent. Bluetooth 5.0 to smart transferring music,via a dedicated Bluetooth button (A2DP, AVRCP) that makes it easier than ever for campers to connect their smart device to their stereo. APP is available for free on Android&Apple devices, turns any smartphone into a wireless remote control. CEC allows user to use a remote control multiple support high-definition equipments,no need other remote controls. Built in clock that can display the time in any mode. Via NFC label it can complete a quick BT pairing. USB port uses on 5V charging for Android&Apple devices. Included Components: Stereo,Remote, Harness, Manual.