Specification: Type: Digital Voice Recorder Material: ABS Color: Gray Storage Capacity: 16GB Microphone: 360-Degree Omni-directional Capacitor MIC Recording Format: WAV /MP3 Recording Time: 20 Hours Play Time: 7 Hours Interface: USB 2.0 Package Included: 1 x Digital Voice Recorder 1 x Microphone Cable 1 x USB Cable 1 x Telephone Recording Junction Box 1 x Earphone 1 x User Manual Feature: 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. One Button Recording: Single button recording feature, you can simply press REC to start recording.