U21 Mini USB WIFI IP Camera Price in Bangladesh. The camera is small, portable, armed, and concealed. For long-term tracking, it supports a range of handheld power and pocket outlet charger. 170° horizontal / 120° vertical wide-angle camera, maximum support for 64GB TF card, 1 x LUX minimum illumination, Android / iOS mobile operating system. There is no built-in battery, simply plug in the power supply to operate for long periods of time.