ALEXA & GOOGLE HOME SMART FUNCTIONALITY – The projector is controlled using the app, which allows you to choose your desired effects from the pre-set list. The app is compatible with TUYA, and is also compatible with Google Home and Amazon Alexa for voice control. Using the app, you can also set timers for your projector to turn on and off to save power. Plus the app works on both Bluetooth and WiFi, so you can control your device remotely from almost anywhere! DUAL PROJECTION TECHNOLOGY - The projector features TWO different projector types; combining a projection lamp with class 2 laser. The lamps can be used independently or combined to produce an absolutely stunning visual experience! Dimensions: 16.2 x 16.2 x 6.8cm. Cable Length: 1.8m STUNNING NEBULA CLOUD – The lamp projector produces a stunning soothing transforming nebula cloud effect on your wall or ceiling; providing a virtual glimpse at these stunning phenomena. BRIGHT STARS – The laser produces a sharp field of drifting stars; simulating the night sky. The green stars look amazing on their own or combined with the nebula effect. Please note, this product uses a class 2 laser – do not look directly into the projector lamps. CREATE A RELAXING ENVIRONMENT IN ANY ROOM - Bring the galaxy indoors! Drift off to sleep in peaceful tranquillity; relax and unwind in the living room, or enjoy dining under the stars - the ENER-J Star Projector instantly brings soothing aurora effects to virtually any room in the house. It’s a must-have for adults and kids alike!