Features: 1: Digital voice recorder + MP3 player 2: Time setting: Real Time Display 3: Support a key lock screen function 4: High-quality studio recording MICROPHONE, more clear 5: Connecting the terminal box can record telephone calls 6: Automatic recording when have sound, no sound automaitc uspended 7: Support external audio speakers playing loud sound HD 8: support loop, sound mode selection 9: Free driver U disk function, upload and download files handy 10: Recording bottom electrical autosave file function 11: Support one-button recording function 12: Support AB repeat function 13: You can play MP3, WMA music file 14: The clock function 15: high-capacity polymer battery of environmental protection(220mAh) 16: Low battery indicating function Specification: Memory: 8GB/16GB/32GB Recording Format: MP3, WMV Recording Bit Rate: 1536 Kbps Recording Save: High quality recording for 96 hours / normal recording for 136 hours Recording Source: Telephone recording, Built-in MIC Battery: 220mAh(Can Recording about 15 hours) Support System: Windows 2000 / XP / 7 / Vista / 8 / IOS Product size (L x W x H) : 3.8 x 1.3 x 0.47 inch Package Included: 1 x Voice recorder 1 x Earphone 1 x Usb cable 1 x Microphone 1 x English user Manual