Bi Directional: 2 RCA or 3

35mm to RCA

in another words

Bluetooth Connectivity for Smart Learning:Supports Bluetooth connection to teaching apps

Perfect Extender: Extending 3

2.8-Inch Bluetooth MP3 Music Player with Touchscreen, FM Radio, Video & E-Book Support Music Player Bi Directional: 2 RCA orAbout this item 2. 8" HD Touchscreen for Easy Control: Equipped with a 2. 8 inch high sensitivity HD color touchscreen, this MP3 player offers smooth, intuitive operation. Browse songs, swipe pages, and adjust settings effortlesslyjust like using a smartphone. Multi Format Audio Playback with Bluetooth 4. 0: Supports a wide range of popular audio formats for flexible music enjoyment. Built in Bluetooth 4. 0 allows wireless connection to headphones or