et-loader

Compliant with Bluetooth v4.0 specification
Highly replaceable, fully compatible with the Bluetooth modules of our other Bluetooth chips, no need to change the design to directly replace
3/5 button inputs (switching / pairing / answering / hanging, play / pause, volume +, volume -, previous, next)
Built-in DSP can realize echo cancellation, environmental noise elimination, EQ adjustment sound effects, etc.
Module own antenna, good RF distance, and consistency
128K EEPROM
USB sound card function
AUX-IN input switching function

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