... time frequency power launch function. 6,Built-in lithium battery, working time is more than 4 hours. 7,Micro USB 5V ... chargeable mode,can use 5v car adapter charger,or mobile phone charger ... : such as ipad,iphone,ipod,smartphones,mp3 players ect. 9,support handset and handsfree call, perfect for car owners. Product features: *The ...