Specifications Hign-concerned Chemical:None Package:Yes Playback Formats:mp3,WAV,WMA With Speakers:Yes External Memory:Yes Record Audio Format:WAV Origin:Mainland China Features: * Simple operation: one-button recording, no need to turn on, push-button switch, press once to start recording, and then press to save the recording, simple and convenient operation. * Acoustic noise reduction recording: Adopts acoustic 8-core DSP noise reduction chip to effectively reduce environmental noise. Long battery life: Recording for about 15 hours on a single charge. * Save when power off: Even if the battery is low during recording, there is no need to worry about losing the recording file, it will save the recording file before shutting down. * Can write while recording: You can write while recording clearly, realizing two-way recording, and the refill can be replaced. * U disk storage function: Adopts U disk flash memory technology, which can be used to store copy files and act as a U disk. Specification: Name: Digital Voice Recorder Model: Q91 USB interface: Micro interface Battery capacity: 180Mah Recording time: about 15H Playback time: about 10H Charging time: about 2H Quick recording: one-button two-speed / one-button normal recording (one-button voice-controlled recording can be set) Voice-controlled recording: support (adjustable voice-controlled sensitivity) Recording format: WAV Playback format: MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC ACELP Timestamp: with timestamp Other functions: with delete function, power LED indicator, playback LED indicator, automatic split recording, loop overwrite recording, support fast forward and rewind playback, adjustable bit rate 192-1536kbit, timed recording, line control operation Size: 148*13mm Color: black Packing included: 1 * Digital Voice Recorder 3 * Replacement Refills 1 * Micro Data Cable 1 * Micro Wired Headset 1 * English Manual Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.