【2-in-1 Hearing Amplifier & Wireless Earphones】The JH-W2 is not just a hearing amplifier; it also features Bluetooth 5.2, allowing it to connect to smartphones, computers, and TVs, and can be used as wireless earphones. It delivers clear sound for radio, multimedia, smartphones, and calls with a high-performance chip and excellent speakers. Easy Bluetooth pairing: simply open the charging case and put them on – it's very convenient. 【Digital Chip & Anti-Feedback】The JH-W2 is equipped with a digital chip that amplifies only the necessary sounds for conversation, providing clearer, higher-quality sound. It also features feedback cancellation to completely suppress unpleasant feedback. Equipped with two high-SNR (signal-to-noise ratio) microphones, it detects and blocks out ambient noise. It even eliminates the sound of small breezes, reducing surrounding noise and disturbances. It fully supports better hearing. 【Volume Adjustment, Modes, & Auto ON/OFF】The volume can be adjusted in 11 steps to suit your needs. It has four modes: Normal, Noise Reduction, Indoor, and Outdoor, allowing you to switch between them depending on the situation for a more enjoyable experience. The auto-switching function automatically detects the device in use and turns on automatically 3 seconds after being taken out. When not in use, it automatically turns off when placed directly in the charging case. 【Rechargeable & Long Operation】Equipped with a long-lasting battery, the hearing amplifier can operate for over 20 hours on a single charge, with only 2 hours of charging. It comes with a charging case with a power indicator lamp, which can charge the hearing amplifier up to 5 times, allowing for approximately 100 hours of operation with the hearing amplifier and charging case, providing peace of mind even when traveling or on business trips. It is suitable for carrying around, with a seamless, perfect one-piece charging case, a matte texture, and a light weight. It's easy to use, just twist the lid with your finger to open it. 【Beautiful Design & Comfortable Fit】Weighing only about 5g per ear. Available in a high-quality black color. It is elegantly polished and finished with a matte texture and high-quality silicone material for a soft touch. The design is easy to match with fashion, with simple and stylish coloring and design that complements any outfit. You can use it without hesitation in any place, such as at home, in business settings, meetings, or on business trips. It can be adjusted with three ear tip sizes and two types of ear fins to achieve the perfect fit for your ears.