Specifications: It uses a high-performance Bluetooth 5.0 smart chip to make the connection simple, fast and stable. The connection range is up to 10m. Built-in 1200 mAh high-capacity core, it has a long duration and the medium volume playback time is 5 to 8 hours. 57mm Rutie-boron with the bass diaphragm, the stereo effect is more powerful so that you can enjoy the 3D sound experience. Support BT/TF/U disk/AUX/FM and other playback modes Built-in an intelligent noise reduction microphone, it can ensure high-definition hands-free calling without a carton.. Support TWS function. The speaker with dual speaker matching mode makes it easy to create stereo sound effects. Item type: Wireless Bluetooth Speaker Colour: Black / White / Blue/ Red / (Optional) Bluetooth version: V5.0 Working range: 10M Power: 5W Frequency response: 120HZ-20KHZ Signal-to-Noise: ≥80dB Distortion: 1% Battery capacity: 1200mAH. Charging voltage: 5V/500mAh Playtime: 2-3h Support: TF/ USB/ BT/FM function Size: 85mm x 148mm x 105mm Weight: 0.5kg  Wireless Speakers with Bluetooth 5.0 Connectivity Compatible with a variety of devices Hands-Free calling Noise-cancelling Ultra HD sound  Package Included:  1 x Bluetooth Speaker 1 x Audio Cable 1 x Charging Cable 1 x User Manual