Bluetooth 5.3 In-ear AI Smart Recognition Hearing Aid 1. This hearing aid is designed for the elderly or people with hearing problems, suitable for those with hearing loss or patients. 2. Small size and light weight, helping you get rid of the constraints of headphone wires, convenient for watching movies, enjoying dramas, etc. 3. Ergonomic earplug design, no pain even if worn for a long time. 4. 32-segment channel fine adjustment to improve sound clarity. 5. Bluetooth 5.3 fast and stable connection, can be used as a Bluetooth headset to listen to music. 6. AI automatic recognition of noise reduction adjustment: user scenes automatically recognize and switch, noise automatically eliminates, and noise automatically suppresses. 7. Specifications: Charging time: 2h Total harmonic distortion: less than 5% Gain value: 35DB+-5DB Output sound pressure level: 118DB+-3DB Battery capacity: headset: 45mAh, charging case: 300mAh