1.One Button Recording: Single button recording feature, you can simply press REC to start recording. 2.Clear Sound: Great MP3, WAV recording format with capacitive audio recording for clearer sound. 3.You can enjoy crystal clear recordings and playback easily, recording automatic gain function (AGC). 4.Support: Support telephone recording, repeat function, automatically saves files with low voltage and external voice speaker playback. 5.Long Record Time: Built-in rechargeable lithium battery allows for recording for 20 Hours. Product Features: One Button Recording: Single button recording feature, you can simply press REC to start recording. Clear Sound: Great MP3, WAV recording format with capacitive audio recording for clearer sound. You can enjoy crystal clear recordings and playback easily, recording automatic gain function (AGC). Support: Support telephone recording, repeat function, automatically saves files with low voltage and external voice speaker playback. Long Record Time: Built-in rechargeable lithium battery allows for recording for 20 Hours. Small Size: Portable and compact to carry wherever you go. Record Life: Perfect to record in your life, keep memory in audio type. Application: This can be widely used for your semester class, lecture, speech, interview, meetings, group talking, podcast recording. Ideal for students, professor, teacher, businessman, writer, blogger. Product Specification: Type: Digital Voice Recorder Material: ABS Color: Black Storage Capacity: 8GB Microphone: 360-Degree Omni-directional Capacitor MIC Recording Format: WAV /MP3 Recording Time: 20 Hours Play Time: 7 Hours Interface: USB 2.0 Package Includes: 1 x Digital Voice Recorder 1 x Earphone 1 x USB Power Cable 1 x Microphone 1 x Audio Cable 1 x Telephone Cable 1 x Telephone Recording Junction Box 1 x User Manual One Button Recording: You can simply press REC to start recording. Clear Sound: Great MP3, WAV recording format with capacitive audio recording for clearer sound. Support: Support telephone recording, repeat function, speaker playback, automatically saves files with low voltage. 20 Hours Record Time: Built-in rechargeable lithium battery. Application: It can be used for your semester class, lecture, speech, interview, group talking etc.