From Century Hearing Aids' website:
The Rosebud Completely in the Canal hearing aid is a discreet hearing aid for people with mild to moderate high-frequency hearing loss.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. A 12-band processor will increase specific frequencies where you need more volume, without affecting the areas you need less volume. The hearing aid has 2 channels, which helps you control the intensity of that channel limiting the sound at a certain peak.
The Century Hearing Aids Rosebud Premium has disposable batteries, volume control, processing channels, feedback suppression, adjustment bands, and noise reduction.