I purchased this on Amazon, but the setup was too much trouble, so I never used it and it's been stored away. Therefore, it's unused, but it has been stored by a private individual. Please understand this before purchasing. The following is quoted from the product description page: Projector Small 18000LM [Brightness Plus & 4K & 270° & Automatic Keystone Correction] Ceiling Projection Wi-Fi6 Instant Connection Bluetooth5.3 4k Compatible 1080P Mini Lightweight Mobile Built-in HiFi Speaker Dustproof Silent 50% Zoom Function Compatible with Smartphones/Laptops/DVD/PS4/Switch/etc. S27 Pro [18000 Lumens/2024 Brightness Up & Full HD 1080P Compatible & Automatic Sleep Timer] To compensate for the low brightness and high noise problems common in commercially available small projectors. In addition, the S27 Pro projector dramatically improves brightness to 400ANSI and supports high-resolution 1080p Full HD and 4K movies. The 4K projector expands the color gamut to over 95%, producing vivid and lifelike images. The 4K projector expands the color gamut to over 95%, producing vivid images. [270° Ceiling Projection & Ultra-Lightweight & Small] Weighing only 600g, the weight is less than 900 grams, which is commercially available, so even small children can hold it with one hand without feeling burdened. You can put this portable projector in your backpack and enjoy watching movies indoors or outdoors. [Short Throw Ratio & Automatic Keystone Correction & Zoom] Whether placed horizontally or diagonally, the vertical automatic keystone correction function automatically corrects tilted images, and manual focus allows you to say goodbye to distorted images and obtain the sharpest possible images. You can use the smart projector's remote control to zoom the image from 85% to 100%. [Ultra-Fast Wi-Fi6 & Bluetooth 5.3 & HiFi Stereo Speakers] The Bluetooth projector also supports wired screen mirroring, so you can easily and smoothly connect to your laptop and enjoy games without lag. The built-in Bluetooth 5.3 chip can connect to headphones, speakers, and AirPods.