Features1. Suitable for mild to moderate severe hearing loss (Reference hearing loss map)2. Mini-size hearing aid is a powerful unit with noise reduction feature, perfect for those who want precise sound amplification, it is so small that others will hardly notice.3. Light and comfortable: device is extremely light, it can be comfortably worn in either ear. With the spring like connection, it can fit in all sizes of ears.4. A10 battery, low power consumption. Long time service which good for travel.5. Analog, digital hearing aid, 2/4/6 channels are available;6. Easy to Operate: Medium size in-the-ear hearing aids, with large volume buttons and battery compartment, easy to operate for the elderly and adults.7. If the ear dome is not completely fill into ear c.