Fangrui Product Details The Device Has Reserved Dc Interface, Audio Input Aux Interface And Headphone Output Port, And Is Compatible With Xh2.54 Interface. With Rich Product Interfaces, Users Can Freely Choose According To Their Needs, Making It More Convenient To Use.the Onboard Antenna Can Transmit Up To 50 Meters In An Open Environment Without External Antenna. The Type-c Interface Can Be Used For Power Supply/usb Sound Card. For The Qcc5125 Model, You Can Also Connect To The Official Software Through The Usb Interface To Operate The Eq In The Internal , Which Is Especially Suitable For Those With Software Foundation. Senior Enthusiasts.the Device Is Equipped With A 12s Output Interface, Which Can Be Connected To An Amplifier With An I2s Input Function. The Device Comes With An Acrylic Shell And A Fixed Magnetic Column, Which Is Magnetically Fixed And Installed, And The Operation Is Simple And Fast. Designed Cancel Bluetooth Connection Button, When An Unknown Bluetooth Device Maliciously Connects, Long The Button For 3 Secon