【Industry-First Innovation! BA Speaker Debut!!】 While general speakers are dynamic type, BA (Balanced Armature) speakers are small, high-resolution, and energy-saving—a next-generation structure ideal for hearing aids. Overwhelming high-frequency resolution. The frequency response exceeds 8 kHz, and voice clarity is improved by over 30%. Amazing miniaturization. The unit volume is only one-third that of dynamic types, making it lighter and more comfortable to wear. Excellent energy efficiency is achieved (impedance of 100Ω or more vs. dynamic type 16-32Ω), reducing power consumption by approximately 40% at the same volume. Superior environmental resistance. Magnetic shielding of 80dB or more shuts out electromagnetic interference. Stable sound quality in any environment. Long-life design. There is no deterioration of the diaphragm over time, maintaining clear sound for a long period (lifespan of dynamic type: about 3 years). 【Amplification of Approximately 35x & Comfortable Fit】 Equipped with the latest DSP technology, it amplifies the volume up to 35 times while reducing noise by 65%, distinguishing between human voices and surrounding sounds to improve voice clarity. Lightweight at only 4.5g and with an ergonomic design, it provides a comfortable fit that is not tiring even after long hours of use. It goes behind the ear and is hooked to secure, so there's no worry of it falling out, and it's easy to use even for elderly people who are not used to wearing earphones. You can enjoy comfortable hearing anytime, without discomfort or fatigue! 【Stepless Volume Adjustment & Easy Operation】 Scroll the volume adjustment knob up to increase the volume. Scroll down to decrease the volume. Fine-tune the volume to your preference and the surrounding environment, select the optimal volume, and enjoy clear sound quality. The buttons are designed for the elderly and are easy to use, with intuitive operation. No complicated settings are required; just turn on the power and it's ready to use. It's easy to use for beginners and the elderly. (To prevent howling and echo, turn the switch "ON" after wearing it, and then turn on the power.) 【Amazing Long-Lasting Operation! Peace of Mind Even When Out & Power Remaining Display】 The rechargeable hearing aid can be used continuously for 24 hours on a single charge. You can comfortably use it all day long, from conversations with family in the morning to watching TV at night. The charging case has a built-in high-capacity battery, enabling over 120 hours of continuous use through multiple charges of the hearing aid. It supports Type-C fast charging and is fully charged in just 1.5 hours.