Ultra Water Flosser (WP-140A) Features: Reservoir holds & provides approximately 90 seconds of water capacity during use On/off water control in handle 10 Pressure settings In-lid tip storage Cordless Plus Water Flosser (WP-490A) Features: Ideal for smaller bathrooms and travel Waterproof design allows for use in the shower 45 Seconds of water capacity with easy fill reservoir 2 Water pressure settings,Rechargeable and portable,USB charging system Get rid of unwanted bacteria and plaque build-up with this amazing water flosser from Waterpik! This Ultra and Cordless Plus Water Flosser combo pack is the perfect set of products to meet all of your Water Flossing needs at home and on the go. Pack Includes: Ultra Water Flosser (WP-140A), Cordless Plus Water Flosser (WP-490A), USB Charger for the Cordless PLUS, 10 Accessory Tips