We live in the sticks and often get short term power cuts so the 'standard' baby monitors that have a battery portable parent monitor and a plug in only baby unit are not always of use. I also love gardening and love to have the baby out in the pushchair outside with me (did this with my first) so a fully portable unit would be handy. I've looked in mothercare balms Argos and neither had such a thing- does it even exist?