[Original 720P HD] The Cheerlux C9S projector is equipped with 2800 lumens, 2000:1 high contrast and 16:9/4/4:3 aspect ratio. colors can improve the contrast between light and dark parts of the picture, presenting more detail, more realistic and natural colors, and giving you an extraordinary cinematic experience. [Wireless Connection Function] The Cheerlux C9S projector supports iOS/Android system WiFi connection and can freely play movies/videos/photos/games on the big screen from smart phones or other compatible devices. Miracast. C9S projector's built-in Bluetooth can freely connect to your Bluetooth headphones, Bluetooth speakers and airpods at any time Keystone correction 20 and zoom function Built-in stereo speakers Built-in speakers, independent sound cavity, more real and three-dimensional sound will make you feel shocked when watching movies and playing games. [Built-in Android 6.0] Memory: 1G running memory + 8G storage, can be connected to WiFi and can be filtered by mobile phones [Multimedia device support] C9S projector is equipped with multiple interfaces, such as HDMI, USB, AV, VGA and headphones, which can be transmitted through headphones, laptops, DVD / VCD players, speakers, USB disks, computers, PS3, PS4 etc. Can meet your different needs. Brand: Cheerlux Model: C9 Material: ABS Brightness: 2800 lumens Native resolution: 1280*720P Support resolution: 1080p Display type: LCD Aspect ratio: 16:9/4:3 2000 contrast: 1 Bid Ratio: 1.41:1 Image Size: 50-280 inch Projection Distance: 1.8-10m Key Correction: Yes Keystone Distortion: 20 Projection: Front, Rear, Hanger, Desktop Interface: HD 1, HD 2, USB1, USB2, VGA, AV three in one, 3.5mm audio output Menu languages: English, French, Spanish, German, Italian, Russian, Japanese, Korean, Vietnamese, Chinese, etc.