Oukitel is pretty active lately with releasing the big battery smartphone models and the next one in line should be the Oukitel K10000 Pro with monstrous 10000 mAh battery. And to help promote it before the official release they prepared some activities for the customers with quite interesting prizes.
Probably the most interesting one is the Guess-the-answer-to-win one of the 20 phones and all you have to do is just try to answer their two questions as close as possible. So it’s fairly simple, just try and guess the total time needed to fully charge the Oukitel K10000 Pro (connected to Wi-Fi and with 1 SIM inserted) or how many times you can reverse charge the iPhone 7 Plus from the Oukitel K10000 Pro. As a small help with the first question you can take into consideration, that previous generation took about 3 hours to fully charge. More information about the even in this link.
Or if you don’t like guessing then you can just subscribe on their official website for a $40 coupon code and $30 gift bag and have a chance of being chosen daily as one of 10 lucky ones to get the retail price $219.99 halved to $109.99. Or participate on their Facebook page for the similar thing, but with different winners so you can actually do both. Good luck !