2K HD VIDEO & IMAGE QUALITY: View every event in 2K image quality so that you can clearly see what is happening inside your home. Upgraded 3 million pixels, up to 2304 x 1296 resolution, for clarity in every angle. | SMART AI DETECTION & REAL-TIME ALERTS: the indoor security camera accurately distinguishes person, vehicle, animal, and abnormal sounds which reduces false alarms significantly and sends you real-time motion-triggered alerts (subscription needed). | FOLLOW THE ACTION & TALK IN REAL-TIME: When motion is detected the camera automatically tracks and follows the moving object. With the built-in microphone and speaker, you can also hear the sound from the scene and speak with people on the camera side. | ENHANCED NIGHT VISION: Equips with 850-nm infrared lights, a high-sensitivity image sensor and F1.9 large aperture lens, YI 2K home camera captures detailed images even in low-light conditions. | SECURED DUAL STORAGE (LOCAL SD CARD & CLOUD STORAGE): Store your data and recordings locally with an extra microSD card (max. 64GB, not included) or in the cloud. YI Cloud offers loop-recording with no storage limit, so even if your camera is stolen or damaged, your footage will still be secure and accessible on the cloud.