This compact, vertical AM/FM radio is the perfect fit for rooms where space is at a premium. It features a new LED battery status indicator and runs on two AA batteries (not included)— so whether you're listening through the built-in speaker or via the dedicated headphone socket, you'll always be able to enjoy great sound. Troubling shooting tips: > Do not mix an old battery with a new one or mix different type of batteries. >When you are not going to use the unit for a long time, remove the batteries to avoid damage from battery leakage and corrosion. >Check if the batteries are inserted in the correct orientation ( and ) when the radio does not turn on after battery replacement. >Batteries have a recommended use-by date for proper use. When using expired batteries, battery life will be extremely short.> Check the use-by date on the batteries and if they are expired, replace them with new ones.