Features : 1.Ear Equalization Training Tool: This diving accessory features a frenzel ear equalization training tool, designed to help equalize ear pressure for a comfortable and safe underwater experience. 2.Corrosion-Resistant Design: Constructed from aluminum alloy with corrosion protection, this diving ear equalization training tool is durable and reliable for long-term use in various underwater environments. 3.Ergonomic Grip: The equipment is designed with a groove pattern for easy gripping, ensuring a secure and comfortable hold during underwater activities such as spearfishing and freediving. 4.Portable and Comfortable: This diving ear equalization training tool is lightweight and portable, providing with a convenient and comfortable solution for protecting their eardrums during underwater apnea and freediving. 5.Versatile Use: Suitable for spearfishing, underwater apnea, and convenient freediving, this tool is an essential accessory for seeking reliable ear pressure equalization. Specifications: Material: Aluminum Alloy Size: 5.9*2.2cm Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. Include: 1 * Freediving Scuba Ear Pressure Equalizer 3 * Balloon 1 * Storage Box