Features: High-Definition o Quality: This digital voice recorder can record with 1536kbps MAV format, ensuring clear, high-quality sound. It also comes with a powerful DSP noise reduction chip to effectively reduce background noise for immaculate o capture. Long Recording Time and Massive Storage: With a 64GB memory card included, the recorder provides up to 288 hours of recording time at 512kbps. The rechargeable built-in lithium battery ensures up to 18 hours of usage time. User-Friendly Design: This recorder Features a TFT color 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 (30min60min90min) for your convenience. 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. 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: G4 Size: 100x25x12MM Screen: 128*128 dot matrix 0.96 inch TFT colour screen Data interface: MICRO 5PIN USB2.0 Support External memory: 4GB - 128GB  Battery: 3.7V210MAh Polymer Discharging Time: about 18hrs Music format: MP3 format 32Kbps-128Kbps Recording format: WAV format 512kbps -1536kbps   Headphone output  Maximum output: 2X20MW(16ohm) Frequency response: 20Hz to 20KHz signal to noise ratio: more than 90dB Distortion: 0.05percent Distortion: -5 to 45º Support computer system: Windows 98 2000XP 710 Package Size: 12x12x5cm4.7x4.7x1.9in Package Weight: 120g4.2oz Packing List; 1 x Voice Recorder 1 x 64GB Memory Card 1 x Earphone 1 x Micro USB Cable 1x User Manual