OFF ist U disk??ON ist voice recorder</br>Portable digital voice recording device</br>Can use as a mini digital dictaphone</br>One year warranty</br>This is a plug and play device compatible with most operating systems</br></br>Product Description</br></br>Features: <br><br>. File Format: WAV audio formats?? Voice Operated Recording?? recording time synchronization<br>. Recording time: 16 hours after fully charged<br>. Capacity:8GB<br>. Support OS:USB2.0 Plug and Play;win98 or above without driver;<br>. Battery:Built-in 120mA-3.7V Rechargeable Li Battery;<br>. Charging Time: About2 hours<br><br> Technical Specifications:<br><br>. Size: 63*23*8mm<br>. Weight: 20g<br>. Charging time: about 2-3 hours<br>. Recording time: about 16 hours<br>. Sampling bites: 48KHZ<br>. Recording format: WAV <br>. Bit rate: 192KBPS<br>. Battery: 110mah lithium battery<br><br>Accessories : UL103 Product*1 <br>Iron Box *1 <br> Use Manual*1</br><br/>http://www.amazon.com/gp/product/B01E321YPU