BNIB BT synergy 6500 cordless home phone with answering machine *

I have a BT Synergy 6500 phone, never been out of the box. Technical Details 250-name and -number directory Four-line colour display 30-minute digital answer machine Text messaging compatible Sim card reader and writer Box Contains Base Unit Handset Battery Compartment Cover Rechargeable batteries Mains power adaptor Telephone line cord User Guide