Features Single button recording feature, simply press REC to start recording. Three recording modes: recording via built-in microphone, recording telephone conversation, and recording via external microphone High quality MP3, WAV recording format with capacitive audio recording for clearer sound. Support telephone recording, repeat function, automatically saves files with low voltage, clock function, and external voice speaker playback. With voice control, it will automatically record when hearing sound and pause otherwise. LCD screen with backlight Low battery indicating function Inner large-capacity polymer battery supports recording for 720 minutes. Can function as a detachable data storage device for pictures or documents Specifications Item Type: Voice Recorder Material: ABS Color: Black Storage Capacity: 8 / 16 / 32GB (choose your storage capacity) Storage Media: Embedded Flash Memory Microphone: 360-Degree Omni-directional Capacitor MIC Recording Format: WAV /MP3 Display: LCD Screen Recording Time: 720min Interface: USB 2.0 Recording Distance: 6-12M Ports: 3.55mm Jacks for microphones and earphones Package Included One (1) Voice Recorder (choose your storage capacity) One (1) Earphone One (1) USB Cable One (1) Microphone One (1) Audio Cable One (1) Telephone Cable One (1) Telephone/Recording Junction Box One (1) User Manual