1、STEREO AND LONG TERM RECORDING: Built in microphone stereo recording, original sound playback, built in 200mAh lithium battery, with up to 45 hours of recording time. 2、PROFESSIONAL NOISE REDUCTION: Use professional noise reduction dual microphones to shield background noise to ensure high sound reproduction and clarity. 3、COMPUTER DIRECT CONNECTION: Built in USB direct connection in the voice recorder, you can quickly transfer files to the computer. 4、FILES CAN BE TRANSFERRED TO MOBILE PHONES: You can directly connect to for Android mobile phones through OTG converters, and organize recording files on your mobile phones. 5、HIGH QUALITY MATERIAL: It is made of high quality ABS material, durable, quality assurance, worthy of possession. 6、SMALL SIZE: Exquisite and small size design, light weight, convenient to carry out, and provide you with recording needs at anytime and anywhere. Item Type: Voice Recorder Material: ABS, Metal Maximum Output Power: 1W (8Ω) Audio Playback Format: MP3, WMA, etc Audio Multimedia Data Transmission Rate: WMA (32-192kbps), MP3 (8-320kbps) Recording Source: Built in Microphone Recording Recording Output Format: WMA Maximum Number of Segments: 999 Segments Recording Playback Frequency Response Range: 200Hz-10000Hz Recording Distortion: <10% (Maximum Volume) Storage: Memory Card (Not Included) Interface: Approx. 1 x 3.5 mm / 0.04 x 0.14 in, 1 x Memory Card Port Battery Type: 200mAh Lithium Battery (Shipped with Built in Battery) Continuous Recording Time: About 45 Hours (32kbps) 1 x Voice Recorder 1 x USB Cable 1 x 0.1in Earphone 1 x Manual