1Fashion Trend: Fashionable appearance, professional design, leading fashion, lightness and elegance. 2Safe and Reliable: Use overvoltage and overcurrent protection circuit to carefully care for your mobile phone and your mobile phone battery. 3Emergency Charging: You do not need fixed power supply, you can charge your phone at any time, and you can charge your phone while you are on the move. You can use one battery or two batteries. 4Lightweight and Convenient: When you go out for business or travel, you can carry it in your pocket, wallet, briefcase or suitcase, which can facilitate the timely replenishment of the phone when the phone is out of power. 5Wide Range of Application: Suitable for various types of mobile phones, changing different cables can also charge MP3, MP4, digital cameras, tablet computers and other products, DC5V universal power supply.