Lecture recording device

Digital voice recorder, one-key recording, long-distance, MP3 audio, dictaphone, noise reduction, MP3 audio, WAV, 128Kbps Overview Built-in lithium battery (270mAh) Recording time of fully charged battery: approximately 10 hours Recording format: MP3 format Recording sampling bit rate: 128Kbps Recording current (approximate): Screen on: about 33mA Screen off: about 26mA Power on/standby current (approximate): Backlight on: 33mA Backlight off: 26mA Shutdown current: 27μA Maximum actual output: (L) 10mW + (R) 10mW (32Ohm) Frequency response: 20Hz to 20kHz External input: 3.5mm headphone jack, built-in USB Microphone: Omnidirectional condenser microphone S/N (Signal-to-Noise ratio): ≥ 70dB Power supply; rated voltage: 3.7V–4.2V USB input voltage/power rating: 5V 300mAh – 5V 500mAh Distortion: 0.05% Device accessories: User manual, data cable, earphone Battery life (per full charge): Recording playback: approximately 10 hours with external speaker (about 30mA, depending on volume); earphones: approximately 30 hours (9mA) Music playback: approximately 5 hours with external speaker (depending on music volume); earphones: approximately 20 hours (13mA) Screen size: 28*25 (broken code symbol display) Device size: 88mm * 33mm * 12.5mm Supports Windows98/2000/XP, etc. Uses ABS raw materials for production with a matte finish Integrated advanced professional audio processing software for recording Professional MP3 recording format, one-key recording Large-capacity memory, allowing easy recording Condenser recording microphone, original recording reproduction Intelligent noise reduction, effectively filtering out noise from the sound source High-capacity polymer battery to meet long recording time needs Equipped with high-definition broken-code display screen, easy to operate at night, clearly visible Supports multiple audio file formats: MP3, WAV Recording function automatically stops and saves when power is low, preventing file loss L-drive free USB disk function, universal USB2.0 interface, high-speed data transfer Intelligent voice-activated recording, effectively saving storage space and reducing useless empty files ● Supports convenient and practical recording function ● One button for one function, easy to operate 199 SAR