The WS-852 Stereo Recorder is perfect for capturing notes, meetings or lectures. With an ample 4GB memory plus an in-built microSD slot this MP3 recorder offers more than 1000 hours in mono or 43 hours in stereo. The integrated USB stick also allows connection to a computer with the need for a cable. Battery life is also over 100 hours; Compatible with Windows XP (SP2 or later), Windows Vista, Windows 7, Windows 8, Mac OS X 10.5 ; 10.9. Dot matrix. Built-in memory 4 GB. Voice activated. Recording time 1040 hours. Twin speed recording. 4 recording qualities. Stereo voice recorder. Dictation and conference recording modes. Slow_fast playback. A to B repeat function. 5 folders. Built-in microphone. Built-in microphone and speaker. Integrated speaker. Can be used as an MP3 player. Storage via Micro SD. WMA files can be transferred and played. Built-in USB connector. Microphone, . General information: Weight 72g. Size H10.8, W3.9, D1.68cm. Batteries required 2 x AAA (included) . Manufacturers 2 year guarantee.