Belonging to Lorex's line of Nocturnal 3.0 smart IP security cameras, this professional bullet security camera offers real-time 30 FPS (frames-per-second) 4K Ultra HD resolution video recording, top-quality night vision, smart motion detection, and listen-in audio. It's heavy-duty metal exterior and extreme weather capabilities also ensure year-round coverage for years to come. Don't miss a moment with our Real-Time 4K Nocturnal Security Cameras. With 30 frames recorded within each second, the on-screen movement will look like you are witnessing events in real life. Add another layer of security coverage with our Nocturnal audio security cameras. Adding audio can add valuable information (such as voices) to your security system.