SMALL AND COMPACT: : This mini projector is only 11.9x8.6x4.8cm (0.29kg), almost the same size as your , ONLY IDEAL FOR HOME ENTERTAINMENT IN DARK CONDITIONS , NOT recommended for PowerPoint or business presentations. With built-in speaker, BUT DOES NOT SUPPORT BLUETOOTH. POWERED BY EXTERNAL BATTERY: The mini overhead projector does not have a built-in battery, it needs a 5V/2A power source such as a wall charger or power bank. Ideal for travel, hiking and camping without electricity nor television. In addition, it is very popular with children. COMPATIBLE WITH MULTIPLE DEVICES: : ARC/USB/AV/SD slots allow this mini projector to connect smartphones, laptops, tablets, DVD players, Switch/PS4/XBOX, Fire TV Stick, Chromecast, USB flash drive , Mirco SD, Audio devices, and more. IMAGE PERFORMANCE: : 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. NOTICE: May not be compatible with Dolby video sound! Ideal for entry-level users, not professional users! HOW TO CONNECT: : To connect to your smartphone, tablets, laptops, you may need a Lighting to ARC cable, Micro USB to ARC or Type-C to ARC which depends on your devices. If you want connect it to WiFi, a WiFi Dongle is required (NOT INCLUDED).