Specifications: The voice recorder is easy to use and driver is not required. It supports the function of flash disk. It is suitable for conference, notes and speech. When fully charged, it can record 15 to 18 hours. Item Name: Voice Recorder Material: ABS, Metal Memory: 8GB (FAT32 Format) Battery Capacity: 110mAh 3.7V Rechargeable Battery (Included) Charging Time: 2-3 Hours Recording Time: 15-18 Hours Recording Sampling Rate: 48kHz Recording Speed: 128kbps Recording Format: WAV Total Recording Time: 140 Hours Frequency Response: 20Hz - 20kHz Working Temperature: 0 Degree Celsius - 40 Degree Celsius Compatible Systems: for Windows 98 or Higher Features: Portable, Long Standby Time, Large Memory Size: 70mm x 21mm x 9.4mm/2.76inch; x 0.79inch; x 0.37inch; (Approx.) Notes: Due to the light and screen setting difference, the item 39;s color may be ightly different from the pictures. Please allow ight dimension difference due to different manual measurement. Package Includes: 1 x Voice Recorder 1 x User Manual