Features: Digital voice recorder music player with high quality sound One-touch recording, high efficiency for class, interviews, meetings, lectures, etc High grade built-in microphone, allows you to record detailed conversations Built-in rechargeable lithium battery, offers up to 20hrs continuous recording (fully ) Supports 8GB\/ 16GB\/ 32GB memory card (not included) Small body, easy to carry hide : Recording Format: WAV Music Format: WAV Playback Formats: WAV, MP3 Power Supply: Li-ion battery Recording Time: 20 hours (fully ) USB Port: USB 2 0 Frequency Response: 20Hz-20KHz Working Temperature: 0-40 With Speakers: Yes Balanced Out: Yes Capacity: No capacity (supports 8GB\/ 16GB\/ 32GB TF Card) Compatible System: Windows XP, Window Vista, Windows 7, Windows 8 Material: plastic colour: black Package Contents: 1 x Voice Recorder 1 x Earphone 1 x Charging Cable 1 x English Manual (English) Only the above package content, other products are not included Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is and\/- 1-3cm