1、LONG BATTERY LIFE: Built in rechargeable lithium battery allows for up to 20 hours of continuous recording (fully charged). This recorder can store up to 100 hours of recording files. It supports fast forward and fast rewind function, and also supports time setting. 2、MAGNETIC ADHESION: The digital voice recorder with magnetic adsorption function can be adsorbed on any magnetic objects, such as sofa chairs, cars, drawers and so on. It also has voice activation function and can record for about 15‑20 days after fully charged. 3、COMPACT AND PORTABLE: Beautifully designed, compact and easy to carry, you can use it as a portable recorder to record anything or as an MP3 player to listen to your favorite songs. It can be widely used in classroom, meeting, interview recording, MP3 music playback and so on. 4、ONE BUTTON RECORDING: Simple one button operation, easy to use. With voice activated function, automatically starts recording when noise is detected, avoiding unnecessary space occupation. Recording distance within 5 meters. 5、PROFESSIONAL RECORDING: The recording bit rate can be up to 192KBPS, which makes the sound more real and better shielded from environmental noise. The recorder adopts intelligent digital noise reduction technology, users can hear the recording content more clearly. Item Type: Digital Voice Recorder Model: Q39 Material: Aluminum Alloy, Electronics Battery Type: Built in 300mAh Lithium Battery (included) 1 x Recorder 1 x Wired Headphone 1 x Charging Cable 1 x Instruction Manual