Hiseeu WHD303 Only Support 2.4GHz WiFi. Does not Support 5GHz WiFi. It’s 5X digital zoom, not optical zoom, when you zoom in and out, the picture will blur. Four infrared lights and four floodlights provide black and white and color night vision modes. With built-in micro SD card slot. But the package not include SD card. (when you insert the SD card, it better disconnect the power port). WHD303 can not only connect directly to Hisee cloud App standy alone, but also be compatible with Hiseeu wireless security camera system. Please Note: PTZ camera can be wirelessly connected to the network, but it must be powered by power supply. If you miss power adapter, please tell us to get a replacement one.