Specifications Hign-concerned Chemical:None Playback Formats:mp3 With Speakers:Yes External Memory:Yes Record Audio Format:MP3 Origin:Mainland China Features: High-Quality Recording Our N15 Digital Voice Recorder boasts a high recording quality of up to 1536kbps, ensuring clear and crisp audio capture. The built-in 64GB memory provides ample space for all your recording needs, the recorder stores up to 288hours of recording time at 512kbps. User-Friendly Design This recorder features a LCD screen for clear display, supports headphone connectivity for private listening, and has an inbuilt speaker for hassle-free playback. It also enables voice-activated recording and segmental recording options (30min/60min/90min/120min) and A-B repeat function, make this voice recorder work best. Easy File Transfer & Multilingual Support Easily upload and download files or music via USB connection. Plus, with support for 6 system languages, this voice recorder is user-friendly and versatile, making it a great tool for international users. Secure & Private A unique feature of this digital voice recorder is its password conservation setting, enabling you to keep your recordings confidential. This adds an extra layer of security for your sensitive information. Long Battery LifeWith its built-in lithium battery, this digital voice recorder offers up to 50 hours of recording time and 25hours of playback time (when using headphones). This ensures you won't miss a moment, even during long recording sessions. Versatile Usage & Comprehensive Package Ideal for students, teachers, business professionals and more, this device comes with an earphone cable included in the package. Plus, with its compact size and lightweight design, it's easy to carry around wherever you go. Specification: Model: N15 Number of folders: 999 files Recording format and sampling rate: WMA format (32Kbps-1536Kbps) The default recording quality of this machine: WAV 512Kbps (the recording quality can also be set as required before leaving the factory) Recording files are saved with time names, and the accurate recording file generation time is convenient for query. Frequency: 24KHz Recording power: 4.8mA-12mA Supports voice-activated recording, scheduled recording, recording splitting, recording monitoring, password, low-power save and shutdown, etc. Support TF expansion card Screen: 0.96 dot matrix LCD screen and supports multiple languages, making operation more convenient. Actual maximum output: (L) 9mW + (R) 9mW (32Ohm) External input: Headphones 3.5pie stereo jack Microphone 3.5pie jack Supports playback of MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP and other formats. USB: PC Interface USB1.1/USB2.0 FULL Speed Built-in speaker output: 800mW Built-in speaker: Dynamic 8ohm, 1W 20mmx30mm Built-in MIC: Omni-directional capacitor MIC S/N (noise ratio): 90dB Power supply method: Rated voltage lithium battery (250MA): 3.4V-4.2V USB input rated voltage/power: 5V300MAH-5V1000MAH Storage: Embedded flash memory or external TF card Operating temperature: -10~50 Weight: About 83g (bare metal) Size: 98mmx37mmx13mm Battery life: about 50 hours of recording, about 25 hours of headphone playback (will vary due to differences in playback files and volume) Package Size: 15.5x8x3.8cm/6.1x3.1x1.5in Package Weight: 100g/3.5oz Packing List: 1 x Voice Recorder 1 x Earphone 1 x USB Cable 1x User Manual