Features: Experience the fun of diving, but what should I do if I want to dive in the sea without professional equipment? Diving free breathing equipment provides you with a better diving experience! The first-stage rotatable valves head can effectively prevent the medium-pressure pipeline from being wound and damage, and effectively reduce dangers. Equipped with a mastering valves control switch, open to keep the valves when inflating and breathing, and close the valves to avoid air-leakage when it is not used up. Wide range of uses: suitable for recreational diving, free diving, deep and shallow spare cylinders. Suitable for both beginners and professionals. Backrest design, easy to carry. Great Gift: This diving equipment set is a great gift for snorkeling enthusiasts on Christmas, Thanksgiving, birthdays and other festivals. If you have any questions, please contact us in time. We will provide you with better products and services. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Material: Aluminum 6061-T6 Capacity: 2.3 L Package List: 1 x Brass primary valves + plastic secondary valves + pressure extension gauge 1 x 2.3 L cylinder 1 x Backrest 1 x diving mask 1 x Silicone Halter 1 x Tube Scuba-Adapter 1 x Aluminum Box Packaging