Features:This digital MP3 voice recorder is with built-in 8GB flash memorySupport U disk functionRechargeable Li-ion batteryBattery time: about 13 hoursThe spy voice recorder offers a long play recording modeTelephone recording function allows you to record detailed conversationsThis digital voice recorder supports Windows XP/Vista/7/8 Specifications: Flash Memory 8GB (Please select FAT32 system when formatting the recorder)Size70mm x 21mm x 9.4mmRecording timeAbout 70 hoursRecording FormatsWAVPower SupplyLi-ion batteryOperating SystemWindows XP/Vista/7/8Recording Bitrate128K bpsUSB PortUSB 2.0Frequency Response20Hz-20KHzMax Audio Output Power�� 5mW Working Temperature0~40oCColorBlack Package Content:1 x 8GB Voice Recorder1 x User Manual