Features:This device works as a voice recorder and a MP3 player. With an external microphone, you can also use it as a digital voice recorder for recording lectures, meetings, interviews.Ultra-low power circuit design to achieve long time recording,working continuously for up to 72 hours or more.USB connection allows you to upload and download the voice files.With built-in loudspeaker, you also can enjoy music or recorded voice without an earphone or speaker.Specification:Color: SilverShell material: Zn-Mg AlloySize: 9.2 x 5 x 1.1 cm (L x W x H)Memory capacity: 8GBExpanded memory: TF card (expanded up to 64GB, card is not included)Recording format: WAV/MP3Music Format: FLAC/APE/OGG/MP3/WMALED Display: 2.0 inchRecord Distance: 3-20mUSB cable length: Approx. 70cmBit Rate: 1536KbpsMax Record File Number: 999Battery: Built-in 850mAh batteryRecording hours: 72hours (based on power amount and recording mode)Standby hours: 300hoursRewinding/ PREV function: SupportA-B repeating function: SupportFast forward: SupportLINE IN: Support Model Number:---Record Audio Format:MP3Package:YesExternal Memory:YesWith Speakers:YesPlayback Formats:MP3Balanced Out:YesExternal Microphone:YesVoice Activated Recording:YesDimensions (WxHxD):----includes:1x Voice Recorder1x Charger Cable1x User Manual