ACTIVATE WITH MOTION - With two WiZ lights in a room, enable SpaceSense in the WiZ Connected app, and lights turn on/off automatically when motion is detected—no sensors needed! CLASSIC STYLE - This oversized bulb with a spiral LED filament creates a warm glow. Its retro clear glass design blends the vintage look of incandescent bulbs with modern LED technology. HUMAN-CENTRIC LIGHTING - Select energizing cool white or soft warm white light, or use preset modes like Focus and Relax to match the ambience to your activities. EASY TO SET UP - Screw in the bulb, download the WiZ Connected app, connect to 2.4GHz Wi-Fi, and start using smart features—no hub or extra hardware needed! EASY TO USE - Adjust lights with your smartphone voice, the WiZ remote control, or by using your existing wall switch to toggle between two favorite modes. Works with Google , Alexa, & Siri Shortcuts. ST19 Color Filament Bulb