WESDAR 2000mAh Fast Backup Charger with USB Powered LED Display Key Chain for Most Smartphones W-126 Stylish, mini and lightweight design with key chain, fits easily into any bag or pocket and allows you to carry it wherever you go 2000mAh external battery with fast charging technology, protect your product and deliver its fastest possible current Built-in stainless metal USB socket guarantees product's long span life Built-in LED display to show the charging status and battery level, safe and reliable Compatible with most phone, tablet, MP3, MP4, PSP, GPS, game device, camera and many more (just connect with your USB cable)