This Blink Indoor Home Security 5 Camera System with HD Video Motion Detection is the perfect addition to your home surveillance. With its compatibility with Amazon Alexa and wireless connectivity, you can easily monitor your home day and night. The system includes five cameras and a battery, making it convenient to use and install. The Blink Indoor cameras have a maximum resolution of 720p and an operating sound rating of 90 dB, ensuring clear and loud audio recordings. The motion detection feature ensures that you are always notified of any unusual activity, even when you are not home. This surveillance camera system is designed for indoor use only and comes in a sleek white color mode.