Features: 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 equipped with a durable built-in 1500 mAh rechargeable battery. Compact size design and powered by rechargeable battery make it portable for travel and party. Night warm lamp, accompany you every night. Specifications: Material:Plastic Color:Black, Bluetooth-compatible Version: 5.0 Operating Range: Up to 33 feet (10 meters accessibility) Charging Port:USB Frequency Range90HZ-20KHZ Battery Capacity:1500mAh Standby:About 6 hours Music Format:WMA,Wav Signal Shielding: 75dB Speaker Size:165x98mm/6.5x3.86in Package Includes: 1xBluetooth-compatible Speaker 1xCharging Cable 1x User Manua 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.