The Medela Harmony Manual Breastpump is designed for moms who mostly breastfeed. Harmony is great for travel or as a backup to your double-electric pump. Small, lightweight design makes it easy to transport discreetly when you’re away from baby for a short time. - The only manual breastpump with 2-Phase Expression technology - Comfortable and easy-to-use - Lightweight and portable - Soft touch, ergonomic swivel handle for comfort - Convenient bottle stand to help prevent spills - BPA-free Manual pump utilizes 24mm PersonalFit Breastshield pumping to more accurately mimic your baby's nursing Let-down Mode simulates your baby’s initial rapid suckling to initiate faster milk flow or "let-down" Expression Mode simulates your baby’s slower, deeper suckling for maximum milk flow in less time Easier assembly and cleaning with fewer parts than other manual pumps; compatible with most standard bottles Includes 1 Harmony pump, 1 Medela breastshield, two 5-oz. containers, 2 lids and 1 bottle stand Number of Pumps: Single Pump System Power Source: Manual Includes: Breast Shields, Milk Storage Bottles Features: Ergonomic Swivel Handle, Single Pump, Massaging Soft Fit Breastshield Pump Type: Occasional Use Safety and Security Features: , BPA-free Care and Cleaning: Spot Clean Material: Plastic Dimensions: 8.63 " H x 7.0 " W x 3.5 " D Weight: 1.0 Lb. Warranty Description: 30 Day Limited Manufacturer Warranty Battery no battery used Assembly Details: assembly required, no tools needed