<p>Stylish and modern . 3 earplug sizes for customized comfort. Just 1 button to adjust sound input. Fast USB charging with long battery life. Portable case with lights to indicate charge</p> <p> design looks like earphones: Feel confident while boosting your hearing. Unlike other aids, these look and feel stylish.</p> <p>Comfortable inner-ear buds in 3 versatile sizes: These effective sound enhancers have a modern slanted design so they're snug and secure. Try the different earplug sizes to find your .</p> <p>1 easy-to-use button to change settings: Use the simple mechanism to switch and adjust the volume input.</p> <p>Practical -USB charging for 10 hours' use: The box gains full power in just 2 hours, and your hearing aids take just 1.5 hours to fully charge.</p> <p>The practical 1.6x2.3x1.1in\/4.1x5.8x2.8cm container shows you: when your supports are powering up and when they're to use. Enhance your abilities with an average gain of 25dB5dB: Take in more of the sounds of your family or the natural world with a frequency response range of 400-4500Hz..</p> <p>Charging instructions:</p> <p>The case: Take the included charging cable and plug it into the port. When charging, the case will show a blue indicator light. is fully , it will change to white.</p> <p>The hearing aids: Carefully place into the charging box. A blue light will be displayed while charging and a white light when they are fully .</p> <p>How to wear the hearing aids correctly:</p> <p>1. the most comfortable size of earplug.</p> <p>2. Place the earplugs onto the hearing aids.</p> <p>3. Hold the button for 3 seconds to turn it on.</p> <p>4. Press the button briefly to adjust the volume input.</p> <p>5. Place the hearing aid into the ear until it is snug and comfortable.</p> <p>6. Press and hold the ton for 3 seconds to turn the hearing aid off again.</p> <p>Maximum OSPL90: less than 117dB3dB</p> <p>High frequency average OSPL90: 109dB4dB</p> <p>Average gain: 25dB5dB</p> <p>Frequency response range: 400Hz-4500Hz</p> <p>Equivalent input noise sound level: less than 29dB+3</p> <p> harmonic distortion: less than 7%</p> <p>Related power supply: less than 6mA</p> <p>Colour:White</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 Pair x ear hearing aid</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>