Usb plug in. We were able to fit four stemmed wine glasses in each rack which freed up space for other types of glasses! They are great replacement for originals that are lost or broken. Ist mit Fritz! It says it?s connected to Bluetooth but doesn?t act like it. Maybe there will be a firmware update. light rain and snow will doOverall, dont hesistate to buy these earbuds, dont listen to you gut but listen to our reviews you wont be disappointed. The only thing they could have added would be a cover for the lightning port. I recommend that a latch or clasp is connected to the top and bottom of the silicone case to ensure that the top doesn?t ?come off? or if it stretches over time, it has an attachment to stay connected and in place. Great company and great customer service.