Features: brand new and high quality Bluetooth-compatible 5.0 provides instant pairing and stable transmission without interruptions. Using upgraded dynamic coil speakers to enhance the sense of depth, presence and space, and present a three-dimensional surround effect like a live scene. USB powered desktop ,PC speakers. Upgrade anti-magnetic technology to avoid current noise. Could be connected with bluetooth-compatible or cables. Specifications: Material:Plastic Color:Black Option Type:Bluetooth-compatible Connection;Wired Connection; Bluetooth-compatible Version: 5.0 Operating Range: About 33 feet (10 meters accessibility) Charging Port:USB Power:DC 5V 1.0A Frequency Range:80HZ-18KHZ Music Format:MP3 Signal Shielding: 85dB Support U Card Speaker Size:38.5x6.5x5.5cm/15.16x2.56x2.17in Output Power:3Wx2 Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xBluetooth-compatible Speaker