NSS-08 is a simple home phone that can be used without an AC adapter, just plug it into a phone line. An easy phone that can be used even during power outages. LCD screen that can display phone numbers up to 16 digits Luminous dial back light that is easy to operate even in dark places. Compatible with catchphones that allow for second person calls. (Subject to NTT) to use. Hands-free function for hands-free calls. Redial function / Pending melody (for elises) / Incoming call volume (large / small) adjustment switch included. (Cannot be cut. Can be used as a dial or push line, with a switch. Can be used for wall mounting. (Screws sold separately) *This product is not compatible with number displays. *Not for use as corporate line environment (PBX), line with splitter, community phone, public phone etc. *Use 1 unit per line *Cannot be used overseas. *May not work with ISDN line