This is a high-end armband with  pocket for 
holding iPhone or Android mobile, having LED flashing 
strip sewn around it , driven by battery, rechargeable. 

Flashing colors: red, green, white, pink, orange...; 
weatherproof, washable by hands; It is a product good 
for sports ,party and road safety;with hole on it linking 
earphone and pouch for key ; light emitted is 
visible in 300 meters in night; the LED part can be
detached , making the armband washable .

It uses 2 pcs of button batteries; change of batteries is 
very easy;Material:  Black neoprene plus LED strip inside ;