The CSC600 combines superb design and ergonomics with powerful amplification and tone management technology. 50dB adjustable handset amplification with full range tone control is appropriate for those with mild to severe hearing loss. Speakerphone in base has 12dB amplification. Up to 15dB outgoing speech amplification is possible. Large backlit Caller ID display tilts for easy viewing. New call, missed call and voice mail waiting indicator. 5 programmable one-touch memory keys and one large one-touch emergency dial button. 16 display languages. 95dB adjustable ringer volume and bright visual ringer. Two amplified jacks: 2.5mm jack for hands free headset and 3.5mm audio jack for neckloop. Accessory jack for optional bedshaker (sold separately below). Hearing aid compatible. One year warranty. Color black or white. Eco-friendly technology (RoHS compliant) and uses 50% less power than other amplified phones.