For the bedroom pair, I use the rechargeable batteries and charging station. will buy from again in the future. Im really happy with this purchase. Its got great battery life. These are really nice looking, well constructed shoes. The pads are soft and pliable, but I dont think these are quite the peer of the other four in comfort. Funzionale e anatomico funziona benissimo, ed e soprattutto di facile installazione. And of course it makes me sweat like crazy. More Fat Bike friendly wheel trays and clamps. This new unit rejects any disc that is not standard -- so if the disc is slightly thicker it will not play.