Digital Voice Recorder 64GB Activated Record Playback MP3 Music Player with Mic and Speaker 1536KBPS High Recording Support Password Protection TFT Screen and Multilanguages System USB Charging for Lectures Meetings Class Interviews Model: 914 Size: 85x25x13mmDisplay screen: TFT display screen USB interface: Type-C Storage media: 64G Battery: 3.7 V/250 MA polymer battery Music: MP3 8KHz–48KHz; 8Kbps–320Kbps Voice: MP3 128Kbps Headphone output: 2 x 20MW(16ohm) Max; Frequency response: 20 Hz to 20 KHz; S/N ratio: >90dB; Degree of distortion: 0.05% Operating temperature: -5℃ to 40℃ Supported Operating System: Windows 98 Second Edition/MillenniuMEdition/2000/XP/Windows 7