EXCELLENT SOUND QUALITY: This digital sound recorder features High recording sensitivity, sensitive dynamic noise cancellation microphone and strong noise cancelling. One key to record and save, makes it super user friendly.EASY CHARGING & RECORD: It only takes 1.5hours to quick fully charge the battery. Built-in rechargeable 110mAh Lithum battery, support 8 hours continously recording. Easy to use and PORTABLE: Mini voice recorder with USB, lacquered metal body. One key to start recording and saving, help you catch the speaker's point in lectures,meetings,speeches quickly. Plug USB sound recorder into your computer port and a folder of recorded WAV files appears immediately. Size only 2.6x0.8x0.35.SMART BATTERY DETECTION: The recorder was built in smart battery detection which makes it save the recording automatically before power exhausted.