Features:_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Pressure relief valves at the top: Press it with moderate force to release the pressure easily, bite it after entering the water, and press it once when you are to inhale to release the pressure and drain the water._x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Pressure gauge: With luminous function, it is still clear at 80 meters underwater. The stainless steel material is waterproof, corrosion-resistant, high hardness, compressive and durable._x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_One-way inflatable filter: high-density filter; prevent impurities and dust from entering the air-intake channel, and cover the dust-proof cover for double safety after inflation, which is more assured._x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_The food-grade breathing mouthpiece is made of food-grade silicone material, which is safe, and ergonomically designed. It is easy to bite and breathing freely. When connecting with the breathing valves, be sure to tighten it to prevent air-leakage._x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Breathing oxygen cylinders: aviation aluminum is used, and the surfaces adopts plastic spraying technology to store high-pressure-gas, which is durable and resistant to seawater corrosion. _x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_ _x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Notice:_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_1.Actual color may be slightly different from the image due to different light effect_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_2.Please allow 1-3cm deviation due to manual measurement_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_ _x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D__x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Material: Aluminum 6061-T6_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Capacity: 0.5L_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_Style: one breathPackage List:_x005F_x005F_x005F_x005f_x005F_x005F_x005F_x000D_1 set x Diving Equipment When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it