Portable Recording Studio - Universal - 16GB USB Remote Digital Audio Recorder with Dongle for Recording Noise Reduction MP3 Audio Recorders 128Kbps MP3 Player(Black) Universal Highlights USB Remote Digital Audio Recorder from 16GB With Key To Record MP3 Audio Recorders With Noise Reduction 128Kbps MP3 Player(Black) 16GB USB Remote Digital Voice Recorder 1 Key MP3 Audio Recorder VOICE Recorder MP3 WAV Recording Player 128Kbps | Digital voice recorder Specification: Built-in lithium battery (270MA) Memory capacity support: 16g Capacity (memory card) Recording time: 16g maximum recording 288 hours, Fully charged battery recording time: about 10 hours recording: MP3 format Sampling recording Bit rate: 128Kbps Current recording (approx.): bright screen: approx. 33 mA: off-screen: approx. 26 mA On-current / standby current (approx.): bright backlight: 33 mA; 26mA Shutdown Shutdown Current: 27 microamps Actual Maximum Output: (L)10MW + (R)10MW (32OHM) Frequency Response: 20Hz to 20kHz External Input: 3.5mm Headphone Jack, USB Micro-Covered: non-directional condenser microphone S / N (noise ratio): 70 dB Current source; Rated voltage: .3.7v-4.2v USB input Voltage/power: 5V300MAH - 5V500MAH Distortion: 0.05% Machine accessories: Clear book, data cable, earphone Battery life (all full charge) Recording: about 10 hours of external sound (about 30mA depending on sound size); Headphones: about 30 hours (9m2) Music: about 5 hours of external sound (depending on the size of the song); Earphones: about 20 hours (13ma) Screen size: 28*25 Broken code screen Machine size: 88mm*33mm*12.5mm Support system: Windows98/2000/XP etc.