1、No sound, no light, no vibration is emitted during video/recording, silent work recording, video recording. 2、One‑key video and audio synchronization, independent video button design, when you are in an emergency, you can complete the video with a single tap, save it, and leave the wonderful moments easily. 3、Good sound quality, good chip, in a noisy environment, while dealing with environmental noise, improve the voice part of the conversation and make the recording clearer. 4、160° super wide‑angle lens, wide field of view, increase viewing range. 5、Automatically save when power off. When the system detects low battery, it will automatically save the file and then shut down to ensures that the video and audio data are not lost. 6、Mobile phone OTG connection, easy playback and storage, OTG connection for Android phone, you can easily realize the playback and storage of video, recording files and pictures. Condition: 100% brand new Item type: Recording pen Material: Metal + glass Color: black Weight: Approx. 151g Model: D8 Video format: AVI Camera resolution: 1920x108030 frames/sec Camera resolution: 1920x1080 Picture format: JPG Recording format: WAV Battery capacity: 200mAh Approximate charging time: about 2 hours Photo/video mode: one-key recording, one-key recording, one-key photography Optional built-in memory: 8GB, 32GB, 64GB 1 x Recorder 1 x USB charging cable 1 x Instruction