The WS-853 Stereo Recorder is perfect for capturing notes, meetings or lectures. With a class leading 8GB memory in-built plus microSD slot this MP3 recorder offers more than 2080 hours in mono or 130 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; Stereo recorder with 8gb memory and rechargeable battery. Compatible with microsoft windows vista /7/8/8.1/10 mac os x 10.5 ; 10.9. Dot matrix. Built-in memory 8 GB. Voice activated. Recording time 2080 hours. Twin speed recording. 3 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. None required, microphone, earphones, headphones and headphones and microphone. General information: Weight 265g. Size H15.5, W13, D4.5cm. Rechargeable (included) . Manufacturers 2 year guarantee.