Model NO.: SP-1002 2.1 Speaker Material: MDF Wood+Plastic Adjusting Method: Keystoke+Knob Play Frequency: Super Bass Speaker Function: USB+SD+FM+Bluetooth+Karaoke+Remote SNR: 81-90dB Color: Silver / Black Trademark: Sea Piano Specification: CE HS Code: 85279900 Amplification Type: Active Usage: Karaoke, Computer, Home Theatre System, Radio, Portable Player, TV, Mobile Phone Sound Channel: 2.1 Structure: Combined Type Feature: Active Speaker: 8"Subwoofer*1+3" MID-Range*2+1.5"Tweeter*2 Quantity/40hq: 1082 Sets(Color Box Packing) Transport Package: Foam & Colour Box/Carton Origin: Zhongshan, Guangdong, China