No outer box, no instruction manual. Thank you. Kashimura Bluetooth FM Transmitter Used for one month, so please understand that this is a used item. I used it with an iPhone and it worked without any problems. It seems that you can listen to anything that produces sound, such as music apps and map apps on your phone, through your car speakers. You can also charge your smartphone while listening to music, and you can make hands-free calls. If you were hesitant to buy a new, official-priced one, why not try purchasing this one? Thank you. Please understand and purchase with the understanding of home storage! Please acknowledge receipt within 24 hours of product arrival... May be deleted as it is also listed elsewhere! #Kashimura #WirelessCallCar #TRANSMITTER #Speaker #FM #Transmitter