It serves to supply power to your WiFi. It is very mismatched in size and can supply power to your router for 4 hours continuously. If there is a problem of frequent power outages in your house, then this device can be very useful for you. Usually people use UPS for their desktop but now it has become available for your WiFi as well and customers can buy it at an affordable price. Talking about the price, its budget is as much as a cheap power bank. If you want to buy it, then you have to pay ₹ 1174 for this. According to a UPS, this price is not much as its original price is Rs 3490 but you are getting a tremendous discount of 66 percent, after which customers can buy it at such a low price.