EcoSmart's 40-Watt equivalent smart G25 LED light bulbs are equipped with customizable light settings that can be controlled wirelessly via your existing network wi-fi or Bluetooth. No Hub is required to use hub space smart bulbs. Set up is quick and easy and only takes a few minutes. These hub space smart LED bulbs are controlled via Bluetooth and wi-fi. when the wi-fi is offline, you can still control the bulb via Bluetooth. Download the hub space smart home onto your android or iOS device to get started. Use the app to simply control the LED bulbs or control the bulbs via your voice assistant, such as Alexa or Google home. Each of these energy efficient smart LED bulbs are dimmable via app and use only 5-Watt of energy to produce up to 500-lumens, equivalent to a 40-Watt incandescent bulb. Equipped with tunable white technology, these smart LED bulbs can be set to any color temperature between 2700K (Soft White) and 6500K (Daylight Deluxe) you can find the perfect color temperature for your space. Enjoy a smart life starting with this smart bulb.