Small and Compact: Measuring only 12.6 x 8.5 x 4.7 cm, this mini projector is almost as big as your projector. Suitable for home entertainment in dark conditions only. Not recommended for PowerPoint or business presentations. Comes with built-in speakers, but does not support Bluetooth. Powered by external battery: The mini projector does not have a built-in battery, but requires a 5V/2A power source such as a wall charger or power bank. Perfect for traveling, hiking and camping without electricity or TV. It's also very popular with kids. Compatible with Multiple Devices: ARC/USB/AV/SD slot allows this mini projector to work with smartphones, laptops, tablets, DVD players, Switch/PS4/XBOX, Fire TV Stick, Chromecast, USB flash drives , Connect Mirco SD and audio devices, and more. Image power: 800 lumens; Native resolution: 480*320 pixels; Maximum supported resolution: 1080P; Aspect ratio: 4:3 or 16:9; Projection distance: 1-3m; Projection size: up to 60 inches. Note: May not be compatible with Dolby Video sound! Suitable for beginners, not for professional users! Connection: To connect to your smartphone, tablet, or laptop, you may need a Lighting to ARC cable, Micro USB to ARC, or Type-C to ARC, depending on your device. If you want to connect it to WiFi, you will need a WiFi adapter (not included).