My first purchase, i bought the same color but the longest veils. They were chargeable by usb,which was awesome, but the cables were loose and turn on button too far...now i have bought shorter,they run on batteries unfortunately but the buttons are well placed. The issue is that the battery holder needs plastic strings to be held ... but the seller gives some and extra batteries, and they have 3 modes...down sides and good sides but overall : I LOVE THEM (and i gave the little gift to my cats who are happy too)
Amazing Product, really deserves a full 5 stars.