Features 1.COMPACT SIZE: The earbud is small and compact, ensuring more concealed fit that no one will know you are wearing them, includes built in replaceable wax guard for service life. 2.NOISE REDUCTION: Reduce background noise while amplifying sound, allowing you to hear sound in noisy environment, consistent sound quality, and almost no whistling or feedback, can adjust the volume according to your needs. 3.CHARGING CASE: Equipped with a charging compartment, with a charging time of 2 hours and a battery life of 10 hours, the glossy magnetic charging base is safe and reliable, without the need for frequent replacement of battery. 4.3 DIFFERENT CAPS: This kit includes 3 different sizes of earbud covers, which can be installed as needed, and the hearing earbud is suitable for the elderly and adults. 5.EARBUD PARAMETERS: The maximum sound output of this listening earphone is 115dB+3dB, with a gain of 25dB5dB, and a frequency range of 450Hz?3000Hz, with low distortion and interference. specificationItem Type: Earbud_x000D_ Product Material: ABS_x000D_ Color: Black_x000D_ Earbud Battery: 85mAh Polymer Lithium Ion Battery (built in)_x000D_ Maximum Sound Output: 115dB+3dB_x000D_ Average Output: 105dB4dB_x000D_ Gain: 25dB5dB_x000D_ Frequency Range: 450Hz-3000Hz_x000D_ Distortion: 10%_x000D_ Frequency Range: 29dB+3dB_x000D_ Charging Time: 2 Hours_x000D_ Usage Time: 10 Hours_x000D_ Working Current: 2.5mA PackageList1 x Earbud 1 x Charging Case 1 x USB Cable 1 x User Manual 3 x Earbud Caps