1. One device does all the playback, and you can listen to it in your hand. 2. We designed a cavity speaker that is independently suspended inside the machine. 3. The orange play button, you can confirm that this is a music player just by looking at it. Product name: wireless bluetooth speaker Playing time: Greater than4 hours (70% volume) Speaker power: 5Wx2 Signal-to-noise ratio: 55dB Distortion: Less than1% Bluetooth version: 5.0 Charging time: 3 hours note: Different batches may have different appearance, which does not affect use. Material: plastic colour: creamy white Package Contents: 1 set x Bluetooth Speaker 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.