Specification:<br> Built-in lithium battery (270MA)<br> Memory capacity support: 4G/8G/16G/32G (not included)<br> Capacity (memory card) recording time: 4G maximum recording 72 hours, 8G maximum recording 144 hours, 16G maximum recording 288 hours, 32G maximum recording 576 hours<br> Fully charged battery recording time: about 10 hours<br> Recording format: MP3 format<br> Recording sampling bit rate: 128Kbps<br> Recording current (approximately): bright screen: about 33 mA: off screen: about 26 mA<br> Power on/standby current (approximately): bright backlight: 33 mA; off backlight: 26 mA shutdown current: 27 microamps<br> Actual maximum output: (L) 10mW＋(R) 10mW (32Ohm)<br> Frequency response: 20Hz to 20KHz<br> External input: 3.5mm headphone jack, USB<br> Built-in MIC: non-directional capacitor microphone<br> S/N (Noise Ratio): ≥ 70dB<br> Power supply; rated voltage: .3.7V-4.2V<br> USB input rated voltage/power: 5V300MAH--5V500MAH<br> Distortion: 0.05%<br> Machine accessories: clear book, data cable, earphone<br> Battery life (every full charge)<br> Recording: about 10 hours of external sound (about 30MA depending on the size of the sound); earphones: about 30 hours (9MA)<br> Music: about 5 hours of external sound (depending on the size of the song); earphones: about 20 hours (13MA)<br> Screen size: 28*25 broken code screen<br> Machine size: 88mm*33mm*12.5mm<br> Support system: Windows98/2000/XP, etc.<br> <br> Feature:<br> 1. Use ABS raw material production and appearance matte process production<br> 2. Built-in high-end professional recording audio processing program.<br> 3. Professional recording in MP3 format, one-key recording.<br> 4. Large-capacity memory allows you to easily record.<br> 5. Condenser microphone recording, reproduce the original recording.<br> 6. Intelligent noise reduction, which can effectively filter the noise part of the sound source.<br> 7. Large-capacity polymer battery to meet your recording time needs.<br> 8. Adopting high-definition broken code screen display, easy to operate at night and clearly visible.<br> 9. Support multiple formats MP3 WAV audio file playback.<br> 10. The recording function is automatically shut down and saved under low power, so that the file is no longer lost.<br> 11. Drive-free U disk function, USB2.0 universal interface, high-speed data transmission.<br> 12. Intelligent voice control recording effectively saves storage space and reduces blank useless files.<br> 13. Support the recording function, convenient and practical<br> 14. One button, one function, simple and convenient operation<br> <br> Package:<br> 1*Recording pen (not included TF Card)<br> 1*Instruction<br> 1*headphone<br> 1*data cable