Description: Support hands-free calling, and also equipped with LCD screen display. Built-in noise reduction HIFI sound quality, no need to drive, just plug and play, which is very convenient. It is made of high-quality ABS, which is very durable to use. The length of the product is 7cm, the width is 4cm, and the height is 1.4cm. It is suitable for mobile phone, laptop, computer, speaker, wireless headset, amplifier. Item Name: bluetooth-compatible 5.0 Adapter Material:ABS Batteries: 300mah(Battery Included) Input Voltage: DC/5V Bluetooth: 5.0 Interface Type: 3.5mm Working Frequency Band: 2480MHz Additional Function: 2 in 1 bluetooth-compatible Audio Receiving and Transmitting Time Display: Less than and Equal to 8 Hours Intercom Distance: 15m Transmission Rate: 300Mbps Size:7cmx4cmx1.4cm/2.76inx1.57inx0.55in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes: 1 X User Manual 1 X Charging Cable 1 X 3.5mm Audio Cable 1 X Adapter