The SpareOne mobile phone is absolutely unique - running on one AA battery, it keeps its charge for up to 15 years.

“备用一号”手机是独一无二的--只需一节AA电池，就能待机达15年。

youdao

The black and yellow buildings, once known as "the lighthouses of the road", were first installed by the Automobile Association (AA) in the 1920s to aid motorists who had broken down long before the days of mobile phones.

BBC: Jersey historical building review in final stage