The Sonic Wave Facial Brush is as described in the product description page. This cordless brush is charged using a recharging USB cord that can plugs into a 120 Volt adaptor outlet. As it is charging the display light is red. When it is fully charged it turns green. This little brush has 3 speeds that illuminate red with the corresponding speed button. This brush is great for cleaning and for stimulating blood circulation around the face. Unlike my other facial cleaner, this ones actually vibrates back and fourth so much that is seems like it is spinning and not just vibrating. It also is a bit longer than my other facial brush. It does a great job of cleaning my face. It holds a charge too. So far I really am impressed with this portable rechargeable Sonic Wave facial brush. I received this Sonic Wave facial brush at a discount for my review.