Product Features High-Definition Audio Quality: Enjoy clear, high-quality sound with 1536kbps WAV format recording. Equipped with a powerful DSP noise reduction chip to minimize background noise for pristine audio capture. Long Recording Time and Massive Storage: Comes with a 64GB memory card, offering up to 288 hours of recording time at 512kbps. Features a built-in rechargeable lithium battery providing up to 18 hours of use. User-Friendly Design: Features a TFT color screen for clear display, headphone support for private listening, and an inbuilt speaker for easy playback. Includes voice-activated and segmental recording options (30, 60, or 90 minutes) for added convenience. Secure & Private: Offers password protection setting to ensure your recordings remain confidential, adding a layer of security for sensitive information. Versatile Usage & Comprehensive Package: Perfect for students, teachers, and business professionals. The compact, lightweight design makes it easy to carry, and the package includes an earphone cable. Specifications Model: G4 Size: 100 x 25 x 12 mm Screen: 128 x 128 dot matrix 0.96-inch TFT color screen Data Interface: MICRO 5PIN USB2.0 Support External Memory: 4GB – 128GB Battery: 3.7V/210mAh Polymer Discharging Time: About 18 hours Music Format: MP3 format 32Kbps–128Kbps Recording Format: WAV format 512kbps – 1536kbps Headphone Output: Maximum output 2 x 20mW (16 ohm) Frequency Response: 20Hz to 20KHz Signal to Noise Ratio: >90dB Distortion: 0.05% Operating Temperature: -5 to 45°C Supported Computer Systems: Windows 98/2000/XP/7/10 Package Size: 12 x 12 x 5 cm / 4.7 x 4.7 x 1.9 in Package Weight: 120g / 4.2oz Packing List 1 x Voice Recorder 1 x 64GB Memory Card 1 x Earphone 1 x Micro USB Cable 1 x User Manual