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HW-770 Bluetooth 4.1 MP3 Decoder Module
HW-770 Bluetooth 4.1 MP3 decoder module with wireless audio streaming and stereo output—ideal for DIY speaker and audio projects.
The HW-770 Bluetooth 4.1 MP3 Decoder Module is a compact audio playback and wireless streaming solution designed for DIY and embedded audio projects. It supports Bluetooth 4.1 audio streaming, allowing wireless music playback from smartphones, tablets, and other Bluetooth-enabled devices.
In addition to Bluetooth, the module functions as an MP3 decoder, supporting audio playback from external storage such as USB flash drives and micro SD cards (depending on the board variant). It provides stereo audio output with stable performance and low distortion, making it ideal for integrating into speakers, amplifiers, and portable audio systems.
With simple power requirements and easy control options (buttons or UART control), the HW-770 module is widely used in DIY Bluetooth speakers, car audio systems, home audio upgrades, and portable music players.

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Text to Speech TTL Module (Serial to Speech)
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 Voice effect optimization
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Dimension: 33*27.5mm
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With mounting holes

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