Improves your TV picture especially in poor reception areas. Distributes  boosted TV aerial output to up to two TVs.  Integrated 4G filter removes interference and channel loss from your TV caused by 4G mobile phone signals.  Includes compact plug-in power adaptor, and a M-to-F short aerial wire, so ready to go with your existing TV aerial. Roughly 3 inches in diameter and 1 inch thick – very light, never hung on a wall as light enough for the aerial wires to keep in place.  Little used, in a cupboard for the last 5 years. Please see photographs which form part of the description.