feature: 1. Unique design and exquisite craftsmanship. The new version of the voice recorder adopts a keychain design, which is lightweight and portable with exquisite craftsmanship. Zinc alloy is forged through multiple processes, giving it a cooler metallic texture. 2. High-definition recording, using the third generation advanced recording main control chip, two-channel stereo recording, and intelligent noise reduction chip to reduce environmental noise and make the recording sound clearer and more natural. 3. Voice-activated recording, recording, silent automatic sleep, improve efficiency, save memory and power. One-click registration, easy to understand and use. 4. Multi-function recording, 100 meters long distance recording, start recording, shutdown backup, timestamp, long standby, noise reduction, MP3 playback, U disk use, etc. 5. OTG function, using OTG connector (not included), you can view/delete files directly on your Android phone. 6. Four-in-one multi-function, recording pen, MP3 player, USB flash drive, keychain, four-in-one, beautiful appearance, no light and no sound, can be used for recording anytime and anywhere, especially in forensics, small and Small venues. Not easy to spot. 7. Widely used, perfect for presentations, speeches, interviews, etc. This makes a great gift for teachers, students, lawyers, writers, and more.