Features: brand new and high quality Bluetooth-compatible provides instant pairing and stable transmission without interruptions. for most band bluetooth-compatible devices. Hang neck type speaker and easy to carry. 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. Specifications: Material:Silicone+Plastic+Cloth Color:Black,Green (optional) Operating Range: About 65.62 feet without Obstacle( 20 meters accessibility) for Play Time:About 10 hours Charging Port:USB Support TF Card Battery Capacity:600mAh Signal Shielding: 75dB Output Power:6W Bluetooth-compatible Version: V 5.0 Speaker Size:20x23cm/7.87x9.05in Music Format:MP3 Frequency Range:40Hz-20KHz Expansion Storage:32GB IPX 4 Waterproof 2 Horns Impedance:4 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: 1x Bluetooth-compatible Speaker 1x USB Cable 1x Manual