Feature 1 [Mini Portable] Black recorder, super small size, not easy to be found. Suitable for meetings, interviews, etc. Aluminum alloy material, sturdy and durable. 2 [One Button Operation] Lightly push the button then you can start recording with one button, with delete function, play with LED light indication. 3 [Voice Activated] 192Kbit ADPCM recording, this recorder can be optional voice activated recording 50DB, automatic split recording, loop overlay recording. 4 [Long Battery Life] Mini voice recorder built in 90mAh rechargeable battery, use USB cable to charge, 8 hours of continuous recording, standby 30 days. 5 [Multi Format Support] This mini voice recorder supports MP3, WMA, WAV format playback, and support fast forward and backward playback, easy to use.Item Type: Voice RecorderMaterial: Aluminum AlloyFrequency Range: 20Hz-20KHzSNR: 90dBSupport System: for Windows 98 ME 2K XP, for Windows 7 8 10 Linux 6.2, for OS X 10Built in Polymer Lithium Battery: 90mAh Package List1 x Voice Recorder1 x Earphone1 x USB Cable1 x Manual