EnerCell - TwoNav Ultra GPS with Great Britain OS 1:50000 Mapping - Black http://ener-cell.com/News/twonav-ultra-gps-with-great-britain-os-150000-mapping--black/ https://electronics.shopping4all.uk/twonav-ultra-gps-with-great-britain-os-150000-mapping-black/ buy now £230.00 Transflective colour 2" 240x320 pixels touch-screen & waterproof IP67 Electronic 3D compass and Barometric altimeter plus ANT+ technology (heart rate chart and zones display) Supplied with wrist strap and bike mount Navigation on any kind of map (topographic maps, satellite images, urban maps) Full GB ordinance survey 1:50000 mapping Fri, 30 Nov 2018 18:00:00 UTC en