This is all the information on the phone: UNIDEN FCC ID # AMWUC518 COMPLIES WITH PART 68 FCC RULES REGISTRATION NUMBER #US:AMWW400BUC518 RINGER EQUIVILENT 0.08 NICKLE CADMIUM RECHARGEABLE BATTERY WWW.UNIDEN.COM ASSISTANCE AID 1-800-297-1023 "I honestly can't tell you when we got the phone, we dropped our land line and went strictly to cell phones, my husband would probably know how long ago we got it, but he is at work right now and i wanted to get back with you ASAP. Thanks for stopping by and inquiring. Have a Blessed Day!