Voice broadcast throughout the whole journey, never miss any calls Automatic switch machine, save effort and worry For Siri voice control 550 mAh battery, 1000 hours of battery life The continuous talk time is about 10 hours Advanced multi-point connection, support two mobile phones online at the same time Built-in DSP noise suppression and cancellation function (CVC8.0 dual noise reduction technology) Bluetooth transmission distance:10M Colour:Black Material:Plastic Package Contents: 1 * Car 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.