- One-key playback: press the designated key to play the recording file, providing a simple and immediate listening experience. - Durable construction: MP3 decoding board is made of high quality plastic material for reliable durability in daily use. - External storage required for recording: when recording, connect a storage device such as a USB drive (U disk) or TF card to store the audio data. - Easy recording control: press and hold the MODE button to start recording, and press and hold MODE again to cancel the recording function. - Storage compatibility: supports external storage options including USB drives and TF cards for flexible recording and playback. - Performance and usability: designed for straightforward operation with clear playback and recording controls, suitable for quick audio tasks without complex setup. Use scenarios - Classroom or meeting notes: quickly record a lecture or discussion by connecting a USB drive or TF card, then use the playback key to review key points later. - Personal voice memos on the go: capture ideas or reminders by recording to a USB drive or TF card, then listen back with a single press of the playback key. - DIY audio projects and prototyping: integrate into small audio kits that require MP3 decoding and simple recording capability, with durable housing and easy mode control for reliable performance.