CLARITY HA40 In-Line Amplifier

DESIGNED FOR PEOPLE WITH MILD TO SEVERE HEARING LOSS; INCREASES INCOMING SOUNDS UP TO 40 DB LOUDER; ADJUSTABLE TONE CONTROL AMPLIFIES SPECIFIC ;FREQUENCY RANGE FOR SOUND CLARITY & DISTINCTION ;BETWEEN SIMILAR SOUNDING WORDS LIKE CHAIR ;& SHARE; COMPATIBLE WITH MOST HOME ;& OFFICE TELEPHONES; CONNECTS EASILY ;BETWEEN HANDSET & PHONE BASE, NO WIRING INVOLVED; COMPACT & PORTABLE; INCLUDES BATTERY SUBCATEGORY2: SPECIAL NEEDS PHONES & ACCESSORIES.