DigiEspow Hi-Fi Stereo FM Transmitter Stand Holder with Charger for Apple iPhone 5 6 6 plus Car Kit Hi-Fi Stereo FM Transmitter + Charger + Holder Handsfree All Kit for iPhone 5 Using steps:1.Put your phone on the cradle, connect it with 3.5mm jack;2.Turn the radio to FM88.1(the default frequency), or keep the Allkit frequency the same as your raido(we suggest to use the requency which the signal is weak,thus our Allkit can play more clearly);3.Play music of your phone,the voice comes from the loudspeaker of your car 4.When the calling is coming,just answer the phone,no need to pick up,and you will hear other's voice instead of the music.When the calling is finished,the music will play again automatically.5.There is a USB port on the right hand of Allkit,it can charge your devices by this port with a USB cable . Specifications:Hi-fi stereo FM transmitting. Handsfree supports talking through car speaker system. Supply charging power. Goose pipe rotation-preventing design makes iPhone/iPod devices steady and secure. Using flexible clamp to fix the iPhone/iPod steadily in the car. Removable stoppers prevent it from dropping. Compatible with iPhone 5/4/4S, iPod and MP3/MP4 or any cellular phone with 3.5 Plug. Frequency features: 100Hz-15000Hz .Separation: 30dB .Working current: 20-30mA .Frequency range: 88.1MHz-107.9MHz(0.1MHz/step) .Car charger input voltage: 12V (current of power adaptor or cigarette port should be more than 1A) .Car Charger output voltage: 5V0.2V .Car charger output current: 1A max .Protection for over-charging. Note: the phone is not included.