Forever Power: Eliminate the hassle of wired installation and install wherever you need. With just a few hours of direct sunlight and built-in battery, you'll get all-day, all-night power. Complete Coverage: Cover every corner with the 166° wide-angle lens that eliminates all blind spots. Clearer, Sharper, Better: 2K resolution offers a 50% clearer image than 1080p. aosuSmart Motion Detection: Capable of distinguishing between someone passing or staying, which ensures precise and accurate monitoring. No Monthly Fee, 32GB Local Storage: Built-in 32GB EMMC storage for free playback and downloading of videos from the last 120 days, with encrypted and locally saved video data.