I purchased this product in the first week of June and since used 2-3x a week for 15 minute rides. The end of July was the front lamp now on the mind. In an email to the seller I got back a relatively flippant email that his would still work. I am surprised by such indifferent answers and do not consider this just for professional. The rear lamp still works perfectly why 2 stars. + Had just six weeks good light + Rear lamp is working properly
