Capacity:3.7V 640mAh 
Cell type:Li-polymer 
Input:5V /500mA(max)
Output:5V/500mA(max) 
Dimensions:70*19.5mm
Weight:39g
Charging time:approx 1.5-2 hrs                   
-Rubber coating              
-Black,blue and gold colors  
-Suitable for iPhone, Samsung, mobilephone,mp3 etc 
-Extra US$ 0.60  for bulid-in iPhone 5 connector(not original)
-Super slim, OK to put in to hand or pocket
-Built-in micro USB,iPhone4,iPhone5/5S cable, not need to bring separated cable
-Fashionable rubber coating design, good hand feeling