The CL1100 is a simple to use and discreet amplified phone, ideal for the hard of hearing with amplification up to 30dB, so suitable for those with mild to moderate hearing loss or those who just struggle to hear their standard phone. Tone control means you can adjust the sound to your liking, as you may have high or low frequency hearing loss.The CL1100 is also hearing aid compatible, for interference free listening for those who use hearing aids with a T position. The CL1100 also has 12 memory keys to program your contact list for one button dialling. It also has outgoing speech amplification of 4dB, so you can make your own voice louder. With adjustable loud 75dB ringer, it’s unlikely you’ll miss any more calls, but just in case it has a visual ring indicator. Other feature include; Time break recall and mute. The CL1100 is very simple and easy to use, ideal for any home or office and this telephone does not require electricity.