Superior recording quality with two HD sensitive microphones Recording Folders A/B/C/D (save up to 999 files in each folder) 360 stereo recording AGC intelligent dynamic noise reduction Extra long standby - 320 hours of battery life in standby mode Built in 8GB USB flash drive Store up to 280 hours of recorded files/audio One key recording - slide switch up to REC to begin recording A/B repeat function Fast forward and rewind during playback Play MP3 Music/audio files Record telephone conversations via the telephone recording adapter (included) Built in loudspeaker LCD display screen PIN/Password Protected Easy file transfer via USB cable (included) Display Screen: 128 * 64 LCD Screen Hard Disk Capacity: 8GB Product Size: 108 * 36 * 10mm Product Weight: 93g Recording Format: MAV Recording Mode : Microphone / Line-In Music Format: MP3, WAV Interface: USB 2.0 Power Source: Built-in Lithium - Polymer Battery Battery Capacity: 1600mAh Li-Battery Headphone Jack: 3.5mm Stereo Microphone Jack: 3.5mm Stereo Built-in Microphone: Supports Built-in Speaker: 20mm * 30mm 8Ω1W 【Package List 】 Voice Recorder Headphone Micro USB Cable Microphone User Manual 【Note】 Before charging, the power switch must be set to the switch-on position. Keep away from fire, water and electronic interference.