**********We have upload operation videos of M5 function. Ingenic X1000E processor with DAC AK4377 for superb performance*****Bluetooth Flatship chip CSR8675 with bluetooth transmitting and receiving. *****Dual microphone with calls and sound recordingsAsynchronous USB DACUSB audio outSupport PO/LO/Spdif output+Native DSD support*****CNC+ 2.5D glass Touchscreen gestures Customizable screen orientation Step counter/pedometer function11 hours battery life22 hours deep sleep standby*****USB Type C symmetrical connector+ micro-SD card support (2TB)