Fast Charging & Long Endurance:Rechargeable hearing aids with all day 24 hours of battery life, and 128 hours of spare battery charging box will escort your hearing aids. Easy Operation:One button is simple to turn on/off and adjust the volume control, easily adjusting different 4-style Sound Environments and 8 volume levels, without any complicated operation. Almost Invisible & Comfortable to Wear:Our hearing aid is super mini and discreet, fit and sit perfectly in ear canal, no easy to fall out, well hidden in the ear. The hearing devices come with different sized domes to meet different people need. Superior Sound Without Distortion:Intelligent noise reduction chip automatically adapts to the surrounding environment and amplifies the sound while canceling the background noise. An ideal gift for seniors with mild to moderate hearing loss. 100% Digital Processing: Intelligent Digital Chip, Provide you with Premium Clear Sound,It offers 8 volume levels & 12-channel.