Control Your Lights from Anywhere. Install the smart Sengled LED bulbs as easily as a standard light bulbs. These bulbs connect to the Sengled Bluetooth App which allows you manage your lights, including brightness adjustment and schedule setting. You can use simple conversation to control yours lights when paired with Amazon Alexa or Google assistant. Features: Light schedules: Schedule your lights to turn on or off automatically.Wake up and sleep mode functions included Smart Lighting: Turn lights on and off, dim and brighten, and more with the Sengled Bluetooth App Voice Control: Connect the bulb directly to your Alexa or Google Assistant device and control your lights via voice commands Group control: Dim, brighten or turn on and off by bulb or by room. Mesh network: Use multiple bulbs to form a mesh network for extended control range. Set the Mood: Choose from over 16 million colours or whites (soft white to cool white / 2000K to 6500K). Lights will automatically turn to the last setting used when turned back on Specifications: Dimensions: H:10.0 x W:12.0 x D:13.0 cm Guarantee:2 Years Model Number: B11-U2EW4P