1、BT TECHNOLOGY: Using advanced BT 5.0 technology, both for IOS and for Android systems can connect easily. After BT connection, you can record on your phone or your own device and sync the files to your phone in real time to view the playback and recording. 2、APP CONTROL, MOBILE MANAGEMENT OF FILES: It has an exclusive APP. With BT connection, you can operate the recording and manage files on the mobile app. 3、INTELLIGENT TIME RECORDING: This voice recorder is equipped with a time synchronization system. When recording, the recorded files are named in time format for easy search and management. 4、USB STORAGE FUNCTION: This AI smart voice recorder comes with built in memory. Can be used as a portable USB drive by connecting the cable to a PC or computer. 5、LOSSLESS SOUND QUALITY, MOBILE MP3 PLAYER: Plug in the line control earphones to function as MP3 players, and you can hear them wherever you go, giving you a good experience. Item Type: Voice Recorder Material: Zinc Alloy BT: 5.0 Recording Format: WAV Playback Format: MP3 WMA WAV Support: APP Recording Battery: Lithium Polymer Battery 300mAh (Built In) 1 x Voice Recorder 1 x Supply Cord 1 x Instruction Manual 1 x Earphone