Never used after being purchased new. Operation confirmed. I am giving it away because I no longer need it. Projector Small Mobile Projector DLP Mini Silent Portable Compact Home Theater 1080P Compatible 100ANSI Lumens HDMI/Chromecast/PS4/TV Stick/TV Box/Tablet etc. Support Rechargeable Large Capacity Battery Built-in PSE Certified Authentic Yoton Y100 Display Display Technology: DLP Rear Resolution: 480P Maximum Resolution: 1080P Brightness: 100 ANSI Contrast Ratio: 2000:1 Projection Distance: 0.3～4m Projection Size: 32～176 inches Recommended Projection Distance: 1.2～1.5m 【Most Advanced DLP Technology】With DLP chip and reflective projection technology, the Y100 pico projector has a 2000:1 contrast ratio, which is far superior to LCD projectors of the same resolution. Not only are the images clear with no image noise, but the colors are also vivid, resulting in more vivid images. 【Compact Design】The Yoton Y100 is ultra-small (9.2*8.1*5.5CM) and lightweight (208g). You can easily put the projector in your bag and carry it around. It has a built-in 3000mAh battery (can be used for 1.5 to 2.5 hours without a power outlet), so you can easily enjoy home theater or outdoor activities anywhere. 【Noise Performance】With DLP projection technology, it operates at relatively low power, generates little heat, and does not require an internal fan, so there is no noise. Even when watching movies or playing games on a large screen, you can enjoy a more immersive experience with pure sound quality. Unlike LCD projectors, fan noise can be heard even when the volume is turned up during use. 【Easy to use with simple functions】The Y100 projector only has an HDMI source input, and you can connect it to a PC, PS4, Switch, TV Stick, or iPhone or Android smartphone by purchasing a Lightning - HDMI adapter or a wireless dongle. You don't have to worry about the complexity of multiple connections. (Note: The USB port is for charging only and does not support U-disk output.)