Description Looking for Mini Size Discreet Voice Recording Device In The World - Here is Exactly What You Want 16GB Super Mini Voice Recorder USB Memory Stick MP3 Player Keychain with Large Capacity 16GB Large Capacity: Store 194 Hours of recording files. Recording Method: One-Key normal recording voice activated recording saving Playback Way: Voice recorder with earphones for quick playback play on computer (WAV format - use Player support this format) Voice Activated Recorder: Factory defaults to close it ( VOR = 0) 1-7:turn on Sensitivity of VOR, 1 is biggest. (Set up at FACTORY file) File Management: viewdeleteplayback recording files on the All Android Phone MAC Windows Computer ( iPhone Not Support) OTG Function: Quick file transferview via phone, only support android phone w OTG function (cant operate software via phone) Time Stamp: Recording files are named by date and time format for easy searching (Need Set up before first use) Magnetic Absorption: use on iron metal surface, like car, metal desk, bed etc. Instruction Guide: check video instruction and many digital instruction file at recorders drive at computer.