Xiaomi said its Smart Camera 4 Pro is now on sale at a first-sale price of 329 yuan, with the promo period running from October 12 to November 13. According to Xiaomi, the model adds a physical call button and supports one-tap WeChat calls plus OK-gesture calling, enabling two-way calls between the camera and WeChat or the Mijia app on a phone. It uses an 8MP 4K sensor (3840×2160) with 4P optics and an f/1.6 aperture, and offers AI monitoring features such as baby-cry detection, pet detection and tracking, human tracking and face recognition; Xiaomi says it supports on-device AI processing.