Let 1s is advance type of Chinese mobile, it have Dolby sound, it much thinner in shape to hold which help you to make comfortable feel while using, it power by 1.85 octane core midiatek processor with helio 10x, it have 3000 mh battery which make him use up to 24 hours, it also have some additional feature it have 13megapixel camera, it total cost around 10 thousand, it is not removal battey , it have 3gb ram and 32 GB of internal gb, it also have a touchscreen system where I can use them to unlock mobile