1. Aviation Aluminum Material: The oxygen cylinder is made of aviation aluminum material, and the is sprayed with plastic technology. It has high pressure gas storage and is not easily corroded by seawater.

2. 4L Capacity: The 4L portable diving tank has a large capacity and increases snorkeling time, allowing you to enjoy the underwater world.

3. Scope of Application: Not only suitable for beginners' diving practice and leisure diving, but also as a backup source for professional divers.

4. Wide Applications: 4L diving tank is widely used in field diving, tourism, seaside play, water play, swimming, etc.

5. Inflation Method: Inflate with high pressure pump, inflate with electric pump, inflate with diving adapter.

Specification:

Item Type: Diving Tank

Material: Aviation Aluminum

Weight: Approx. 5800g / 12.8lb

Height: Approx. 43cm / 16.9in

Base Diameter: Approx. 14cm / 5.5in