With the iPhone 6 4.7 in./6S & Galaxy S 5 flash band Flashing sports Armband from iWerkz, you or your favorite Runner will never have to worry about visibility. This Flashing sports Armband has Multiple flash setting to allow you to be seen up to 500 feet away and will last up to 200 hours with the included replaceable battery. This Armband is one size fits most and comes with an adjustable strap for the perfect fit. It even features a Secure house key pocket, so you won't have to worry about losing your key while you run or play!