I have several, for different reasons. A. On my keychain, to see the lock in the dark, $5.00, U.S.A. B. Four in my kitchen, for emergencies (bad thunderstorms when the electricity goes out), $8.00 each C. One in my basement for emergencies (If a tornado comes, we have to go in the basement), $5.00 D. Two small but powerful ones in the bedrooms, for emergencies, $6.00 each. E. one kept in my luggage for traveling, in case of emergencies, $5.00

Yes No Lights go out $10 you welcome :)