Braun Oral B Aqua Care 4 Cordless Water Flosser helps improve your gum health and gently removes food trapped between teeth especially wires and braces. Oral-B’s Oxyjet Technology mixes air and water to form clean-boosting microbubbles. The microfine bubbles of air boosts your oral health routine with the on demand button you can control the water stream with precision. Aquacare 4 has two intensity settings: Sensitive and regular, each can be used with two nozzle water streams: Focused or rotational. The On-Demand mode allows you greater control of the stream to release water only when you need it. Easily handled with no attachments, contains 145 ml volume of water; this product offers protection from a splash of water in any direction.