Feature:1. Compact Design: The card shape design with a thin thickness of 0.27in enables easy recording in your pocket without taking out.2. Large Capacity: When fully charged, the large recording capacity of 40 hours will surely satisfy your all day recording needs.3. Better Control: Voice activated, the recorder ensures less noise and better sound quality, which will also save power and space.4. Practical Uses: Allows for wide application for meeting, office, lecture, interview and so on, practical and reliable for use.5. Easy Carrying: Comes with a small size and a light weight as well, the convenient carrying makes it ideal for indoor and outdoor.Specification:Item Type: Audio RecorderRecording Time: About 40 HoursVoice Activated Working Time: 80 HoursRecording Format: WAVBattery Type: 1 x built in 3.7V 600mAh Li ion battery, shipped with built in battery. Battery Model: 602540Battery Capacity: 600mAhRecording Bit Rate: 192K bpsUSB Port: USB 2.0Frequency Response: 20Hz-20KHzMaximum Audio Output Power: 5mWWorking Temperature: 0 - 40.Package List:1 x Audio Recorder1 x Data Cable1 x English User ManualNote:When the battery power is low, the system will automatically save the recorded files and shut down. You need to charge the battery before use. If the system does not respond, you need to turn the switch to OFF, wait for 30 seconds and try again.