Features: 1.The combination of professional sound raising system and tuning technology, set the sound to a comfortable audio frequency. 2.3D surround shock sound effect, stereo 2.1 sound, amazing sound effect. 3.Cool cycle of 7 color breathing lights, passionate music coupled with cool light, wonderful using experience. 4.Independent bass adjustment key, volume adjustment key designs, can be adjusted according to needs. 5.A variety of practical purposes, to meet the daily needs, suitable for use when playing games, watching movies, friends gathering and other show. 6.3.5mm Audio interface and for Bluetooth function are compatible with most smart devices in the market. specification:Condition: 100% Brand New Item Type: Computer Speaker Material: ABS Brand: SADA D-209 Frequency Response: 25Hz~20KHz Output Power: 3W Track: 2.1 Input Interface Mode: USB power + 3.5mm audio Power Supply Voltage and Current: USB/DC 5V -- 600mA PackageList:1 x Main Speaker2 x Subspeaker