[640PP HD Resolution] The D60 640P HD projector uses brilliant LED lights and LCD screen technology, 2800 lumens high brightness, 1000:1 high contrast ratio, providing more than 60% clarity and brightness for home entertainment Color desktop image. [Built-in stereo speakers] The D60 640P HD projector's built-in stereo speakers can produce deep ambient sound without the need for an additional audio system to bring clear sound, which is very suitable for home movies . [Manual Keystone Correction] D60 640P projector supports keystone correction, horizontal screen rotation, maintain clear image, everything is easy. [Perfect Compatibility] With USB, HDMI, VGA, AV, TF card, built-in USB, headphone port and associated HDMI cable. It can not only wirelessly connect with IOS/smartphone/Android tablet/Windows 10 laptop easily, but also compatible with TV equipment/TV box/USB flash drive/TF card/DVD player/PS4/PC etc. Enjoy wireless home theater or video games on the big screen now! This D60 portable projector is very suitable for home, garden, games, yoga and parties. Optical parameters Operating system: none Technology type: LCD Physical resolution resolution: 1280*720 pixels Brightness: 2800 lumens Contrast ratio: 1001:1-2000:1 Aspect ratio: 16:9 and 4:3 Displayable colors: 1.67 million Projection method: front, rear, hanging mold Lens projection lens: manual focus Keystone correction correction: vertical +/- 15 degrees Optical element Projection size: 35-120 inch Projection distance: 1.8-5m Lamp life: more than 30000 hours Bulb power: 150 w Speaker: 4 5w*1 Menu language: Chinese, French , Spanish, Portuguese, German, Arabic, English, Russian, etc.