1Independent Recording Button: Independent recording button, one key recording prevents operation errors and tedious operations. 2Voice Activation: When the sound is greater than 30 decibels, the recorder will start recording, and the sound is less than 30 decibels, stop recording. 3High Definition Recording: Clear and natural, reduce distortion, can finely process faint sounds, meet your sound quality requirements. 4Record Anywhere: It can be magnetically attached to the metal surface, so you can put it where you want, making it more portable. 5Support OTG: Support for mobile phone OTG connection, you can play recordings, view and upload management files on mobile phone (For Android phones only). Item Type: Recorder Model: B800 Material: ABS Colour: Black Storage: Support up to 128GB memory card expansion (Not Included) Recording: WAV 192kbps Play Format: MP3 MAV WAV Sampling Rate: 16KHZ Battery Type: Built in 1500mAh Lithium Battery Continuous Recording Time: About 240 Hours Continuous Playback Time: About 130 Hours 1 x Voice Recorder 1 x Headphone 1 x Data Line 1 x Back Clip 1 x English Manual