The SpareOne is the first mobile phone in the world that runs on a single AA battery.

After purchasing a new phone, there's the usual frustration of having to wait until the battery is fully charged before making calls. With the SpareOne, you can hold a long conversation within seconds of buying it.

All the SpareOne requires is a single AA battery, which provides the phone with ten hours worth of talk time. Even more praise-worthy is the phone's record-breaking shelf life of up to fifteen years so it's always ready to use in case of an emergency. Using batteries for the device also means that users don't have to worry about being outside as the phone does not rely on power adapters like its counterparts.

The SpareOne was recently showcased at the world's largest tech trade exhibition, Consumer Electronics Show (CES) in Las Vegas and is currently marketed as an emergency phone. However, it has also demonstrated a greater breakthrough in mobile technology for daily usage. On arriving in foreign land, travellers can avoid roaming charges as the SpareOne operates according to local rates. Notably, due to its affordable price, the SpareOne makes purchasing a mobile a more attainable concept within developing countries. This would mean that the phone would encourage more efficient communication between friends, family and even in contacting emergency services.