Vodafone AirTouch plc, (NYSE: VOD) (London Stock Exchane: VOD) today announced that its U.S. registration statement relating to its offer to purchase all the outstanding shares and American Depositary Shares of Mannesmann AG (OTC Bulletin Board: MNNSY; Hamburg: MMNGn.de) was declared effective on December 23, 1999 by the U.S. Securities and Exchange Commission. The offer will expire at 6 p.m., New York City time, on Monday, February 7, 2000, unless the offer is extended. Vodafone AirTouch's United States information agent is D.F. King. Mannesmann shareholders should call 1-800-714-3312 for further information. ots Original Text Service: Vodafone AirTouch plc Internet: http://www.newsaktuell.de Contact: Melissa Stimpson, Senior Investor Relations Manager, Vodafone AirTouch plc, +44-1635-673-310; Steven Bruce and Mary Beth Kissane, both of Abernathy MacGregor Group, 212-940-0309, 917- 678-6324, or Dec. 26, 212-371-5999; or John Bibas of D.F. King, 212-493-6925; or Simon Dingemans, Goldman Sachs International, +44-171-774-1000; or Mark Lewisohn, Warburg Dillon Read, +44-171- 606-1066, all for Vodafone AirTouch plc