From Century Hearing Aid's website:
The Best Ear Basic is an open-fit hearing aid. Since the circuitry is on the outside of the hearing aid, this model is for people with moderate to severe high-frequency hearing loss. The Open fit style is discreet and not easily visible. There are no ear molds, making the hearing aid lightweight without giving your ear a stuffed feeling. By the push of a button, you can change between 4 memories for a quieter setting, a noisy setting, while using the telephone, and when listening to music. This hearing aid will allow you to hear the sounds you have been missing. There is an easy-to-use volume control button located on the hearing aid for easy access. An 6-band processor will increase specific frequencies where you need more volume, without affecting the areas you need less volume.
Best Ear Basic appears to be the same as the Persona Medical EVoK EV625. You can learn more about this device by visiting Century Hearing Aid's website.
The Century Hearing Aids Best Ear Basic has telecoil, disposable batteries, volume control, processing channels, feedback suppression, noise reduction, and adjustment bands.