First let me say what a great product this is! You can sure it does the job when a policeman thanks you for wearing it because he can see you so well. And secondly for the longevity of this product. I have had to replace the battery but never the product and it is well over 5 years old. Thanks for a great product.
Love love love this arm band. I walk daily before sun up and often after sun down...along with a reflective vest and shoe lights....my neighbor and I are very clearly able to be seen by drivers and other pedestrians. Love this item.