The Plantronics Clarity EXL 30 not only makes calls louder, but also easier to understand. Patented Clarity technology amplifies and shapes high frequencies to enhance communications for the millions of people who experience high frequency hearing loss, the most common type of hearing loss. Clarity Power™ technology isn't just about amplifying phones. It's about helping people communicate as easily as possible Important note:- This telephone provides amplification and is popular with many people who suffer a minor hearing impairment. Unfortunately it is not suitable for all users. If you have a serious loss of hearing, we suggest you visit a hearing specialist who may be able to offer a product that matches your exact requirement. Like most suppliers, we are unable to provide a 'try before you buy scheme'. | 
