Small design-Perfect design to fit tightly in the ear canal with a natural and nearly invisible appearance. Need to worry about falling out or losing it, and no need to feel embarrassed about wearing hearing aids. Natural Sound-Suitable for mild to moderate hearing loss, according to your needs and different usage scenarios, you can get different gains, assist in watching TV, on the phone, in normal discourse, and more, making the sound more natural. Easy Operation-Auto turns ON/OFF while in/out of the charging box. No complicated buttons or modes. 5-second start-up latency to avoid whistling before you fit it well in the ear. No need to tell Left/Right. Rechargeable-The hearing amplifiers are rechargeable with wireless magnetic charging and feature a 25 -30 hours battery life with a 2-3 hour charging time. With a sleek magnetic charging case, the devices wirelessly charge whenin the case.