First, the power of the hearing aid should have more than enough reserved space, in order to have a good and lasting effect. Basically, if you have less than a severe hearing loss, you can choose an in-the-ear device; if you have more than a severe hearing loss, you should choose a behind-the-ear device, so that you can have enough amplification space for your hearing to decline again.
Second, choose the type of hearing aid: in-the-ear or behind-the-ear. Most people choose in-the-ear devices for their aesthetics and privacy. The in-ear machine is subdivided into the largest out-of-the-ear type, which is the ITE in-the-ear machine, and then the ITC, CIC, and IIC in-the-ear machines in descending order. Behind the ear machine is also subdivided into the traditional behind the ear machine and the receiver external RIC micro version of the behind the ear machine.RIC was launched on the popularity. At present, it has accounted for eighty percent of the total global market share of sales.
Third, the hearing aid battery type: there is a one-time replacement of the use of zinc air battery type, and lithium rechargeable batteries (battery life up to six years). Zinc air batteries according to the size of 10, 312, 13, 675 four, hearing aids smaller replaceable zinc air batteries small size, capacity is also small, the use of time is short, the cost of repurchasing batteries is higher. It is necessary for you to weigh the pros and cons of the choice. The current trend is that rechargeable hearing aids are becoming more and more popular.
Fourth, value-added features: all brands of new high-grade hearing aids can be directly connected to the Apple phone, and Switzerland's Sonova Hearing Group developed and exclusive SWORD low-power Bluetooth chip so that its Phonak, Unicom and Hansatron three brands of hearing aids can be wireless direct connection to the Apple, Android cell phones and any audio device with blue function. There are also hearing aids with T-coil function, hearing aids with AI machine learning function and hearing aids applying micro-sensor technology to monitor health data and fall alarm function, and these value-added functions are not centralized in one hearing aid, so you need to choose hearing aids with the corresponding functions according to your own needs. However, hearing aids with Bluetooth headset function are becoming more and more popular, parents wear this kind of hearing aid will not miss your calls, you wear this kind of hearing aid do not have to think about Bluetooth headset!