Feature: 1. Balance Middle Ear Pressure: Helps to balance pressure in the middle ear and can be effective in relieving discomfort that may occur while travelling or during the busy cold and allergy season. Aids in regulating pressure differentials for greater user comfort and relaxation.2. Relieves Nasal Congestion: Our earplug device pushes a steady airstream into the nasal passages, quickly opening the eustachian tubes and allowing fluids to drain more easily, while balancing barometric pressure and relieving congestion and bloating due to changes in altitude, nasal congestion, and earplugs.3. Easy to Use: Instead of relying on messy ear drops or irritating earplugs, using the device allows the user to alleviate discomfort inside the ear with a simple use. Provides users with an easy and effective way to manage ear pressure issues.4. Portable: With its and compact design, you can easily this ear pressure relief device into your pocket or slip it into your purse, handbag, tote or backpack. Whether you are travelling, out of the office or doing outdoor activities, you can always carry this device with you.5. Multifunctional: Not only does it help to balance the pressure in your ears when taking off and landing in an aeroplane, driving in the mountains and when you have a cold, but it can also be equally effective in a variety of other situations, such as scuba diving, travelling to the and so on.Specification:Item Type: Ear Pressure Relief DeviceBuilt in Battery: Lithium ion battery 900mAH(built in)Application: Suitable for diving, high altitude and other ear negative pressure is large situationHow to Use:Holding the eustachian tube evacuator in one hand, the eustachian tube evacuator nose sleeve firmly over one nostril to create a seColor: As ShownMaterial: ABSPackage Contents:1 x Ear Pressure Relief Device1 x USB cable1 x English instruction manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.