Support English control Single MIC Access Support elimination, steady-state noise reduction Support to wake up from learning, no need to compile firmware Comprehensive recognition rate can reach more than 98% Identification time is less than 100ms Extremely low error rate Entry corpus up to 150 Introduction: Integrated 32bit RISC , frequency up to 240MHz Support for instruction sets and FPU floating point arithmetic units Accelerator: Maximum Support 1024 points / IFFT operation, or 2048 points / IFFT operation Unisound Equation Customized Logo Algorithm Built-in 242KB high speed 8kb ROM for boot Built-in 2MB SPI Flash Support 1 road simulation MIC input, equal 94dB Support for dual channel output Built-in 5V to 3.3V, 3.3V 1.2V LDO is power supply for chip Provide complete RTOS-based SDK Colour:Black Material:PCB+electronic components Package Contents: 2 x -02-Kit development board 2 x Speaker 2 x Microphone 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.