... microphone,come with 8pcs SD slot Features: 1Magic Sing-Along: Select songs directly from the 2 Wireless digital microphones (included), ... , echo, key control, tempo, Melody volume control, favorite songs reserve, random play, repeat, continuous play; Compatible: DAT, AVI ... SD card can contain more than 20,000 midi songs 4.Support Songs' Language: Chinese, English, Vietnamese, Tagalog, Spanish, ...