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: 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 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.