The TECKIN SB50  Smart Bulbs LED are dimmable, Wi-Fi connected, and can be controlled using voice or app commands. These smart bulbs have a modern style and feature energy savings, voice control, app control, and the ability to set timers. With a multicolor light and a brightness of 800 lumens, these bulbs are designed for indoor use and have a long lifespan of 22.8 years based on 3 hours of usage per day. Made by TECKIN and sold in a pack of four, these smart bulbs are a convenient and versatile lighting solution for any home.