One-key operation & Voice activation Turn the switch to "ON/Rec" to start recording, and turn the switch to "OFF" to save . The voice activated recorder suitable for anyone to operate.Easy to use.Automatic recording when sound is greater than 45 decibels.This will be able to recording longer time and save more storage space. Free-swithing Bit & Up to 3072KbpsThe listening device can freely adjust the Bit , including 512Kbps/768Kbps/1024Kbps/1536kbps/3072kbps. The larger value, the clearer sound Triple Intelligent Noise CancellationThe voice recorder adopts triple digital intelligent noise reduction technology, which can automatically reduce 90% of ambient noise; Stereo microphone can capture farther/lower but more Clear for easy listening to HD stereo recordings. 64GB capacity & Playback The mini voice recorder built-in 64GB storage capacity, enough space for more than 30 hours of continuous recording, and storage for up to 750 hours files. And real-time playback with earphone. No need computer ,you also can listen to the recorderd files . Of course you can use it as MP3 to listen to your favorite songs. Mini size & time stamp This voice recorder is mini and practical, which is convenient and fast for daily travel and does not take up space in your bag.You can put it in the cosmetic bag, wallet, schoolbag, and hanging on the belt, backpack, car keychain. Each recording will be named with a timestamp, making it quick and easy to locate the file on your computer. Note: File management requires a connection to a computer. HD recording The recorder is equipped with high-quality microphone, intelligent dynamic noise reduction, professional recorder adopts PCM digital triple noise reduction technology, realizes 360 panoramic recording, provides you with truly complete, clear and natural sound.