SD/MMC card reader. USB 2.0 high speed interface. | 2 LED lights -- Red light indicates charging status; green light indicates operating status. | Automatic search music file, automatic play music. Repeat playback mode. 7 function control buttons. | Portable MP3 player. Can be used as an usual cassette tape in car -- You can place it into tape player and then play music. | Support 2000/XP system. Support FAT12, FAT16 and FAT32 format.

【MICROPHONE AMPLIFIER.】This microphone sensor comes with an ear to your project with this well-designed microphone amplifier.Very economical and useful | 【TWO POWER SUPPLY VOLTAGES】This microphone sound module supports two power supply voltages: 3.3V and 5V,which can meet your different use needs. | 【HIGH SENSITIVITY】This durable microphone sensor has high sensitivity, fixed gain is 20dB,very practical for youb to use | 【SEPARATE PINS】Our sound detection module has separate pins for both analog and digital output, default output is analog signal | 【LOW OUTPUT NOISE】This microphone module uses professional microphone amplification IC, low output noise,perfect for using at home