Engenius DURAFON1X Single Line Cordless Phone System 6 hours talk time, 50 hours stand-by time It has AC charging cradle with power adaptor Supports portable handset models DuraFon 1X-HC and DuraWalkie 1X Rugged & durable designed handsets for industrial environments Works behind any analog port (PBX, VOIP, PSTN, FXS or POTS)