[Lightweight and portable]: Small size, made of zinc alloy body, strong and easy to carry. You can use it as a portable recorder or MP3 player, it can be widely used in classrooms, meetings, interview records, MP3 music playback, etc. [One-key recording]: WAV recording format, high-quality recording, up to 384kbps. Support LP / HQ / SHQ record types. It supports voice-activated recording. When a sound is detected, it will start recording, and will stop recording when the sound is over, which can save more storage space for recording. [Enhanced capacity]: Support volume control, fast forward and rewind, A-B repeat function, time setting, 24 different languages for your choice. Monitoring function, support recording and listening. Support telephone recording function. Built-in microphone and speaker. With headphone jack and external microphone jack. [8GB memory capacity]: The recorder has 8GB memory capacity, no additional memory card is needed, and it is easy to use. USB connection for uploading and downloading voice or music. [Built-in battery]: Built-in rechargeable battery, when fully charged, continuous recording for up to 18 hours, continuous playback for up to 4 hours (plug in headphones). Battery: 200mA Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Black Material:ABS Package Contents: 4 x Voice Recorder 4 x Charging cable