"The Swann 4K DVR has crime-fighting features other security systems dream about. Activity can trigger push notifications to let you know what's happening and recording to ensure you have video evidence when you need it. Imagine being able to see faces, tattoos and license plates with state-of-the-art 4K Ultra HD video and powerful digital zoom to actively watch over entrances, yards, driveways, parking lots, shop floors, storerooms, and customer service areas. With the Swann Security app, you can even watch live or playback video on your smartphone from anywhere in the world. In fact, you can view any of the cameras on your smart TV, and speak to see hands-free via Hey Google and Chromecast, Google Home Hub, or via Alexa devices. Know what's happening at any hour with powerful infrared night vision. Swann's True Detect™ heat and motion detection senses people and cars for more reliable monitoring and fewer false alarms. Mount the cameras inside or outdoors as their weatherproof design is built to withstand rain, snow and heat, all year round. With the 4K Ultra HD DVR System you'll get free local recording for up to 180 days+ onto the massive 1TB hard drive with no subscription fees ever and the option to backup video to your Dropbox account."