Been using these for a few months now and they have become my go to headphones, not just for running or cycling, but day to day activities. The sound quality is amazing. The fit can be annoying at first, but spend some time experimenting with the buds and tips to get the perfect fit, it will be worth it. The battery life is great, never hit the 4 hrs 30 min mark of continuous use yet but they easily cope with an afternoon of cycling. The 3 year warranty is the icing on the cake.