An electric breast pump that allows for natural expression using the baby's natural sucking rhythm. Batteries, power outlet, and operation have been confirmed! - Brand: Pigeon - Type: Electric - Included items: AC adapter, instruction manual - Product name: Baby Rhythm Breast Pump - Features: Allows for natural expression using the baby's natural sucking rhythm - Colors: White, Yellow There is some yellowing due to long-term storage at home. My mother used it while my younger brother was hospitalized. My brother recovered, and time passed without it being used again. Only those who don't mind the condition, please. Thank you for looking.