Features: brand new and high quality Bluetooth-compatible 5.0 provides instant pairing and stable transmission without interruptions. for most band bluetooth-compatible devices. Support TF card display. 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. Small piece and easy to carry. Specifications: Material:Plastic Color:Black,Blue,White,Yellow (optional) Operating Range: Up to 33 feet (10 meters accessibility) for Play Time:About 3 hours Music Format:MP3 Support TF Card Charging Port:USB Frequency Range：100Hz-20KHz Battery Capacity:600mAh Signal Shielding:≥ 75dB Output Power:5W Expansion Storage:16G Bluetooth-compatible Version: 5.0 Speaker Size:11x8.5x8.5cm/4.33x3.35x3.35in Package Includes: 1x Bluetooth-compatible Speaker 1x USB Charging Cable 1x Manual 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.