1.To charge the iphone or ipod from car charger powered from cigar lighter. 2.Frequency: 88.1-107.9 MHz

Features:

Enhance noise reduction and stereo streaming

Over 200 switchable FM frequencies

Suitable for all iphone/ipod/MP3/MP4

Low current,no need battery,power supply directly from iphone or ipod

To charge the iphone or ipod from car charger powered from cigar lighter.

Specification:

Frequency: 88.1-107.9 MHz, 0.1 MHz/step

 Receiver sensitivity <-80dBm (Per 1%) 

Signal noise ratio (SNR>68 DB) 

Distance: 33ft (in open space) 

Operating temp & Humidity: 14~122F.O~95%

Work current: 25Ma 

Voltage: 3.3V

FM Transmitter Charger for iPhone 4S&3G