The Philips Hue White Ambiance Bluetooth LED Bulb works straight out the box – simply fit your bulb and use the Philips Hue Bluetooth app for easy control. Set the mood with a warm-to-cool white light. Choose a cool white for study time or a warm, soft white for movie nights. Control your light without reaching for your phone. With an Amazon Alexa or Google Home device, you can use simple voice commands such as, 'Alexa, dim the lights' or 'Hey Google, turn on the table lamp to control your lights.