The Nocturnal Lights SLX 800 underwater video lights are a high-quality set of 4 lights designed specifically for underwater use. These lights are part of the Nocternal Lights brand, known for producing reliable and durable lighting for water sports activities such as scuba diving and snorkeling. The lights come with arm (2 each) and camera (2 each) mounts, making them easy to attach and use for capturing vibrant and illuminated underwater footage. Whether you are a professional videographer or a recreational water sport enthusiast, these lights are sure to enhance your underwater experience with their bright and long-lasting illumination. Shipped without batteries for safety.