1. with FM radio, aux in function

2. can read Sandisk USB, can read SD card

3. with Remote control

4. with Audio connect cable;

5. with built in 1000-1200MAH rechargeable battery

6. with LED display screen

7. LED lights speaker rings different from before:K19B lights come out from the speaker cone, K20B lights is multi-color and not play by music. both can be on/off by long press "MODE" button.