Product parameters:Memory: Support TF card (Note: When formatting, please select FAT32 system)Dimensions: 85mmx54mmx7mmRecording time: about 40 hoursVoice-activated recording: 120 hours of standby time, when the surround sound exceeds 45db, the audio is automatically recordedRecording format: WAVVIP card size, unique design, the same size as bank card, thickness 7mm, easy to put in wallet, handbag or pocket, can play music with our USB headset;Function: Recording + MP3Battery: Lithium batteryBattery: 600MahOperating System: Windows XP/Vista/Win 7/8/Lunix OS/MAC OSRecording bit rate: 128K bpsUSB interface: USB 2.0Frequency Response: 20hz-20khzMaximum audio output power: 5mWWorking temperature: 0 ~ 40Simple operation: just turn off the power switch, press the function key to start recording, no need to operate, it has indicator LED lights to show the working status;Product List: 1 x Voice Recorder1 USB cable1 x USB Headphone1 x User Manual