X1 Classic Professional Noise-Canceling Voice Recorder 1. Stereo dual array microphones with 360 degrees noise reduction pickup, automatically filter ambient noise for clear human voice capture in busy environments 2. Up to 1536kbps lossless high bitrate recording, professional-grade sound quality that fully restores voice details and speech pauses 3. Dual silicon microphone array for lossless audio capture; supports LINE-IN direct recording to transfer audio from external devices 4. Voice-activated recording with 5 adjustable sensitivity levels: auto-record when voice detected, auto-pause during silence to save storage and simplify post-processing 5. Scheduled preset recording: set custom start & end times in advance, device auto-starts recording to avoid missing opening content of meetings 6. Segmented long-duration recording: auto-split files every 306090 mins, easy file sorting for all-day long recording tasks 7. Monitor recording via earphones in real-time, instantly check audio quality to ensure complete capture of key information 8. Automatic timestamp for all recordings, files named by time for quick searching and archive management 9. Built-in speaker for lossless music playback, works as a portable audio player besides recording 10. Wide Application Scenarios: Perfect for business meetings, group discussions, classes, interviews, music recording, language learning and more 11. Built-in 500mAh battery, offering up to 85 hours of recording on a full charge. 12. Storage capacity: Approx. 90 hours of recording per 8GB 13. Material: Aluminum alloy + ABS 14. Display: 1.1 inches 15. Recording format: WAV MP3 16. Playback formats: MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP 17. Product dimensions: 85x36x14mm 18. Product weight: 32.4g