NBY 6680 Colorful Light 6D Stereo Wireless Bluetooth Speaker Feature 1. Bluetooth 5.0, fast connection and stable signal, compatible with all Bluetooth devices. 2. Mesh cover for protect speaker from water, dust, shock. 3. Support TF Card，USB flash disk plug and play，Support audio input function (AUX) 4. 10W big power with two bass diaphragms on each side, vibrate when playing music. 5. Cylindrical shape and built-in left and right channel offer 360° stereo. 6. Call function, noise canceling microphone makes you answer calls without reaching your phone. 7. FM receiver makes you listen to the radio freely. 8. Support MP3, WMA, WAV, FLAC, APE format music files. 9. Easy button control, you can press buttons to turn onoff, playpause, switch mode, skip songs, adjust volume etc. 10. 1800mAh battery for up to 10 hours of playtime at 23 volume on a full charge. 11. TWS Function, 360 degree stereo sound, specially designed with the TWS function for a room-filling stereo sound to provide 3D stereo surround sound. Specification 1. Bluetooth version: 5.0 2. Bluetooth distance: <33Ft 3. Frequency response: 70Hz-20KHz 4. Signal to noise ratio: >=95dB 6. Distortion rate: <0.5% 6. Horn size 45MM 7. Horn Lmpedance : 5W*2 8. Battery capacity: 1800mAh 9. Charging Time: 2-3 hours 10. Working time: 4-6 hours 11. Charging parameters: DC 5V 12. Product size: 135x135x160mm 13. Packing size: 158x158x170mm 14. Product weight: 615g Packing list： Bluetooth speaker x1 USB cable x1 User manual x1