A display (100; 200; 800) comprising: a weatherproof housing ; a bistable electro-optic medium enclosed within the housing and visible through the housing ; at least one electrode enclosed within the housing and arranged to apply an electric field to the bistable electro-optic medium , a power generating means (504; 832, 834) enclosed within the weatherproof housing ; and display drive means arranged to receive power from the power generating means , and to control the potentials of the at least one electrode , the display being characterized by data receiving means enclosed within the weatherproof housing and arranged to receive data wirelessly from a source outside the weatherproof housing , the display drive means being arranged to receive data from the data receiving means , the weatherproof housing conforming closely to the components therein such that no air gap of more than about 5 millimeters exists between the weatherproof housing and its contents, the weatherproof housing having a main section and a second section, the main section enclosing the electro-optic medium and the power generating means , the main section having at least one aperture which exposes a plurality of electrical contact pads , the second section housing at least one printed circuit board comprising the display drive means and overlying the at least one aperture, the second section also housing conductors which make electrical contact with the exposed electrical contact pads , and the second section covering the exposed electrical contact pads , the at least one printed circuit board being covered in a weatherproof material which extends to the main section so that the weatherproof material seals the at least one aperture in the main section. a weatherproof housing ; a bistable electro-optic medium enclosed within the housing and visible through the housing ; at least one electrode enclosed within the housing and arranged to apply an electric field to the bistable electro-optic medium , a power generating means (504; 832, 834) enclosed within the weatherproof housing ; and display drive means arranged to receive power from the power generating means , and to control the potentials of the at least one electrode , the display being characterized by data receiving means enclosed within the weatherproof housing and arranged to receive data wirelessly from a source outside the weatherproof housing , the display drive means being arranged to receive data from the data receiving means , the weatherproof housing conforming closely to the components therein such that no air gap of more than about 5 millimeters exists between the weatherproof housing and its contents, the weatherproof housing having a main section and a second section, the main section enclosing the electro-optic medium and the power generating means , the main section having at least one aperture which exposes a plurality of electrical contact pads , the second section housing at least one printed circuit board comprising the display drive means and overlying the at least one aperture, the second section also housing conductors which make electrical contact with the exposed electrical contact pads , and the second section covering the exposed electrical contact pads , the at least one printed circuit board being covered in a weatherproof material which extends to the main section so that the weatherproof material seals the at least one aperture in the main section. <EOS>