<b>Why choose Rainyb Wearable Breast Pump?</b><br/> Rainyb's breastfeeding products are based on research on women's body structure and babies' natural sucking. We cooperate with famous universities, hospitals, research institutions and breastfeeding experts around the world to develop advanced breastfeeding.<br/> solutions technology. Brings reliable and innovative products to Moms.<br/> <b>Features :</b><br/> ღThree modes: Massage & Stimulation & Expression .<br/> ღ9 levels Adjustable Strong Suction.<br/> ღQuiet design and no pain ღ Handsfree : wear under your bra and keep both hands free.<br/> ღ Anti-backflow Function:<br/> The professional backflow protection system prevents the milk from getting into the Pump motor, and keeps the milk clean. ღAdditional funnel insert can satisfied for the different size of the nipple( This is spare parts, you can use it or not to use it) Choose funnel insert according to your nipple size, then push the funnel insert into the breast shield.<br/> <b>Specifications:</b><br/> Level：1-9<br/> Max suction :290-310mmHg<br/> Working condition 5-40℃<br/> Adapter output 5V ==1A<br/>