【Portable Design】: TUDIVING 0.5L diving tank provides 5-10 minutes of air,dive times vary, depending on your breathing rate and dive depth. The perfect size of the bottle with a diameter of 6CM is very suitable for carrying around. After the diving tank is disassembled, you can take it on the plane and go diving anywhere. 【Excellent Workmanship】TUDIVING mini diving bottle is made of 6061 aviation aluminum material, which is more resistant to seawater corrosion and has stronger damage prevention performance. The design of the fluorescent pressure gauge allows you to accurately measure the remaining gas in the bottle even in a dark environment. The three-layer filtration system effectively prevents the entry of dust and impurities, making the inhaled gas cleaner and ensuring healthier breathing. 【Switched to Diving Design】The scuba diving suit is specially designed for diving enthusiasts. The full-face mask is suitable for 0.5L diving bottles and combines the advantages of traditional snorkeling and diving. On the water, air enters the mask through the snorkel. Underwater, it is provided by scuba tanks. You can breathe freely through your mouth and nose and enjoy the underwater scenery. 【DOT/CE Certification】Our scuba diving tanks are DOT /CE certified and comply with international standards for diving equipment. Diving bottle are easy to use and learner-friendly.Its safe depth limit is approximately 33 feet. Can be used as a backup air source for deep dives within 100 feet.You can use it for underwater exploration, boat cleaning, emergency insurance,backup air source,etc. 【Three Ways to Inflate】There are three ways to inflate: The first method is to use a filling adapter that is in contact with the large bottle to guide the small bottle. It can be filled in 6 seconds normally. The second method is to use an electric compressor, and the 0.5 liter bottle takes 10 minutes to be completely filled. The third method is to use a hand pump,