Specification: Item Type: Mini Voice Activated Recorder_x000D_Material: ABS, UV_x000D_Frequency Range: 20Hz-20KHz_x000D_Signal To Noise Ratio: 90dB_x000D_Support System: For Windows 98 ME 2K XP, For WIN7 8 10, For Linux 6.2, For OS 10_x000D_Built In Polymer Lithium Battery: 120mAh Features: 1HIGHLY CONCEALABLE: Black mini voice activated recorder is highly concealable and easy to carry by pinning it to any place. 2BUTTONLESS DESIGN: Mini voice activated sound recorder has multifunctional operation by wire control, with delete function, playback LED indication. 3LONG LASTING LIFE: Mini digital voice activated recorder has 17 hours of continuous recording, 30 days of standby, and long battery life. 4AUTO SPLIT RECORDING: Small voice recorder optional voice activated recording 50DB, ADPCM recording 192Kbit. Support MP3, WMA, WAV playback. 5TIMESTAMP: Micro sound recorder with time stamp, recording file names named after time. Support fast forward and rewind playback. PackageList: 1 xMini Voice Activated Recorder 1 x Earphone 1 x Charging Cable 1 x Instruction Manual