(only those use iOS 6.1.2 or earlier system)Note: If you update your device to iOS 7, this item may not compatible. Features: • Perfect audio transmission function. • Compatible with virtually any Smart Phone and MP3/ MP4. • Provides hands-free conversations through your car speakers. (need to connect with 3.5mm audio) • Full frequency range design effectively avoids interruption. • USB output charging for Mobile Phones, GPS, and other devices Compatible Models: any iPhone 5 iPad 4 iPod Touch 5 iPod nano 7(Accessory ONLY. Phone not included. Apple does not endorse use of these products. All rights reserved. All trade names are registered trademarks of respective manufacturers listed. Apple®, iPhone ®, iPad®, iPod ® are registered trademarks of Apple®, Inc.) Specifications: Radio Type: FM Frequency; Frequency Range: 88.1-107.9MHz; Interval: 0.1MHz; Effective Range: approx. 5m; Input voltage: DC 12~24V; Output voltage: DC 5V, 1A; Working environment: -10°C~+55°C Operating Instructions: • Insert the car charger into the car"s cigarette lighter. • Keep the FM transmitter and car"s FM radio at the same frequency. • Now you can enjoy your digital music with full sound and convenience. • The operation of the above will also allows provides hands-free talking through your car speakers. (only can be used when 3.5mm audio connected) Package Contents: 1x FM Transmitter with car charger (phone is not included) 1x User"s Manual