Model: E366 Power supply mode: built in lithium battery Frequency response range: 60hz-15khz Bluetooth protocol: 4.1 Playback format: MP3 Whether there is radio function: Yes Output power: 25W Product weight: 0.5 Connection method: Bluetooth connection Interface type: USB Function: card insertion Playback time: 8 hours Effective distance: 10M Supported format: TF Card Signal to noise ratio: greater than equal 70dB Extended storage: 32GB Type: card speaker Colour:black Material:TPU+Plastic Voltage:AC220V Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Package Contents: 1 * Wireless Speaker 1 * Microphone 1 * power adapter 1 * USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.