The Flx® Family of 312 Open-fit Products features a patented ergonomic design case created with our focus on the patient. The Flx® family offers 3 technology levels 4, 6 and 12 channel circuitry for all types of lifestyle needs. Key features include the iScroll® Digital Volume Control, a smooth, easy-to-adjust roller for those who may have limited dexterity. The new push-button memory switch is effortless to locate and operate. Wear it over the ear (OTE) or behind the ear (BTE); with an open-fit ear bud or with a custom ear mold.