Low power smart wifi built-in battery camera. 5W solar panel, Built-in 7800mAh battery, 180 Days Free Charge. 4.0 Megapixel, wide viewing angle. WIFI Camera : Support 2.4G wifi network connection. Infrared night vision function, although high-definition color images can be seen at night. High Quality two-way intercom with noise cancellation. Support Micro SD card up ...