Digital Voice Recorder 20 Hour Recording MP3 Player Mini Voice Recording Pen for Lectures Meetings Interviews BLACK Description Specifications: Using time: 20 hoursCharging time: 5 hoursTemperature: 5°- 40°Frequency: 8KHZ --48KHZActual maximum output: 300mwMusic format: MP3: 8-320Kbps, WMA: 32-192KbpsNoise: >80DBBattery: 3.7V/200MA grade A lithium batteryTF card: Up to 32GB (Not include)Screen: 1.2 inch (OLED ultra HD)Micro USB: Speed 2.0Dimension: 72 x 20.5 x 11.8MM Package Included: 1 x Voice Recorder1 x User Manual1 x Data Cable