The biggest advantage of the Q20 is 5 megapixels, with a resolution of up to 2560X1440 Ultra HD 2K, better results. Built-in 1800mAc dual lithium battery, working time of more than 5 hours, standby time of more than 1 year. 8 straw hat 940nm infrared light, automatic switching night vision, no red dot, better night vision, support voice real-time intercom, 160 degrees wide angle lens, whether in the indoor / outdoor can be used. Support 128G memory card The biggest advantage of Q20 - HD 5 megapixels, image quality up to 2K, resolution 2560X1440, do not miss any details. Built-in battery - built-in two "double lithium batteries", 1800mA, working hours up to 5 hours, no matter where, can be able to work. In the room, a 1-meter USB cable is included, which can be connected to mobile power or USB devices to achieve 24-hour power supply. HD night vision - the biggest feature of Q20 has "8 straw hat 940nm infrared light", fearless night, built-in IR-CUT function, automatically switch night vision, no manual, night vision working state without red dot, with 5 million pixels, even in the dark without light, can enhance the effect, clearer than traditional. Two-way voice - Q20 supports two-way real-time voice calls, no matter where you are, you can talk to your family and children in real time through your cell phone.