About this item⭐【Advanced Background Noise Cancellation】Our digital sound device are designed to effectively handle background noise to help you focus on the sounds and voices you want to hear. Whether you're at home, traveling, or outdoors, these sound devices are ready to enhance your world with clear, vibrant sound⭐【Easy to operation】Simply select the included ear domes that fit you best, Long press button for 2 s turn on the device. It owns multifunctional button to switch mode program and volume. Quickly press the button twice for switch mode. Short press to adjust the volume. Attention: Please remove the film from hearing Amplifier⭐【Portable rechargeable charging case】A full 2 hour charge ensures up to 16 hours of continuous use. .
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