DLAND Wireless Bluetooth Handsfree FM Transmitter with LCD Display, Can Connect With All Kinds of the Cellphones And Transmit the Cellphone Music to the Car. Hi Fi, Stereo, Digital with PLL techology. Suitable for all the 3.5mm headphone port smart phones: like CD, MD, MP3, MP4, PDA, PC, IPOD, IPHONE, DVD, etc. Working Time: Up to 4.5 hours. Charging time: 1 hour. FM Operating Distance: 15 feet FM Frequency Range: 88.1~107.9MHz