I used this projector for 2 months, it work well with white wall, and i dont need the screen.the colour can show 70% as well, sounds is clear. Sadly that i usually watch movies at night, cause in daylight the screen hard to see, but this night time is after 10pm, living in apartments so need turn down volume, with plan sound so it abit hard to hear. Very suit with the one who want cinema at home, always cool. Bonus: i bought "anycast" M9 plus for wireless conect huewei phone, ipad, iphone same like wireless projector. Dont need to buy any separate cable, and expensive than. Very satisfied