High quality, mechanically balanced for smooth inhalation and exhalation. Features an under-chin exhaust system that directs airflow to the sides. Durable and resistant. Includes a silicone mouthpiece. Suitable for diving, snorkeling, underwater breeding, underwater rescue, and fish farming. Product parameters: Housing: PC + ABS Valve: Electroless nickel-plated brass Diaphragm: Silicone Quantity: 1 pc Type: Downstream demand valve Color: Yellow Material: Plastic Package Contents: 1 x Scuba Diving Regulator Note: Other products are not included. Light reflection and differences in display settings may cause slight variations in color between the image and the actual item. Measurement error allowance: +/- 1-3 cm.