64GB Digital Recorder & Compact Size The keychain voice recorder come with 64GB memory, enough space for more than 24hours continuous recording and store up to 750 hours recording files. It can also be a professional MP3 player and USB Drive. Our 64GB portable voice recorder have unique designed makes it look unlike a audio recorder at all HQ Recording & Triple Noise Reduction The audio recorder have high qualityrecording microphones with intelligent dynamic noise reduction, moreover, professional voice recorder with PCM digital & triple noise reduction technology for noise-free recordings and 360 panoramic recording, providing you with a really full clear and natural sound, you will enjoy clear recordings and playback easily One Key Operation & Time Stamp Toggle the switch to ON/Rec to start a recording after approx.5 seconds, toggle to "OFF/Save" to save recorders. Each of the recordings named with timestamp, making it quick and easy to locate your files incomputer. ATTENTION : Connecting computer is the necessary condition for files management Voice Activated Mode When turn on the voice activationfunction, the voice recorderdevice will automatically start recording, 7 levels of voice activation can be adjusted, this will reduce blank and whispering recording, and saving quantity of electricity and memory space. Tip: voice activation is turned off by default. If you need to use this function, please turn it on according to the manual Voice activated recording Records when the device detects sound automatically and stops recording when the sound goes away. With this feature you only record what is important and save storage space. It will also be much easier to find relevant recordings from the audio file. With Automatic Timestamp, current date and time will be recorded automatically on the audio file so you can easily organize your recordings Product parameter specifications:1 Recording format: WAV/192 kpbs2Music playback format: WMA/WAV/MP3/OGG and other audio formats 3Battery recording time: about 15 hours 4Battery usage time: about 10 hours5 Battery: 150mAh lithium battery Charging time: about 2 hours 6 Signal-to-noise ratio: 80 decibels7USB interface: USB20 high speed8 save recording time about 188H/32GB save recording time: about 376H9. Working temperature: -5 to 40 degrees 10 Record sampling rate: 48KHZ 11 Headphone jack: USB jack12 compatible system: Windows2000 and above 13 size mm): 70*23*8(L*W*T14 Net weight: about 34g