Bt synergy 5500 twin ?

Product Features •Twin Cordless Phone •Answer Machine •250 Name & Number Directory •Text Messaging •250 Name and Number Directory •5 line Blue Backlit Display •12min Digital Answer Machine •Text Messaging Compatible •Sim Card Reader & Writer Technical Details Battery Type NiMH AAA Battery Size 550mAh PBX Compatible More Details: http://bt.custhelp.com/app/answers/detail/a_id/12494/~/bt-synergy-5500