1. Premium Aluminum Alloy: Crafted with high-quality aluminum alloy, this ear equalization training tool is sturdy and offers excellent durability. It is treated with anodization, providing resistance against corrosion and rust for long-lasting use. 2. Enhanced Grip with Grooves: Designed with a groove in the middle, this ear pressure balance training device improves grip, allowing for a more stable and secure hold during underwater training sessions. Enjoy enhanced control and confidence while practicing diving skills. 3. Dual Cleaning System: The innovative design features a secondary water flushing system at the air intake, ensuring thorough cleaning of the airway. This helps maintain a clean and hygienic breathing passage, promoting safety and comfort during extended diving sessions. 4. Ear Pressure Equalizer: Specifically developed as an aid for free divers, this tool assists in mastering equalization techniques on land. Improve and fine-tune your ear pressure balancing skills to enhance performance and comfort during deep dives. 5. Professional Dive Equipment: This versatile ear equalization practice tool is an essential addition to any diver's gear collection. Whether you're a beginner or an experienced diver, it offers the necessary support and practice to refine skills and excel in the underwater environment. Color: Gold Material: Aluminum alloy Package Contents: 1 x Ear Pressure Balance Trainer Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.