Momcozy Double S12 Pro Wearable Electric Breast Pump Kit With Two Pumps.Two S12 Pumps with Double-sealed flange and LED Display. Default Flange Size: 24mm.9 Adjustable Levels & 2 Models. Noise less than 50dB. Suction Force: 280300mmHg. Charge Time: About 1.5 hrs. Usage Time: 140 mins/5~6 sessions. Charging Port: Type-C (compatible with 5V 1A adapter). Container Capacity: 6 oz (you are recommended to pump within 4oz). Material: PP + Silicone.Includes: - 2 Pump Motors - 2 Milk Collectors (180ml) - 2 Silicone Flanges (24 mm) - 2 Silicone Diaphragms - 4 Duckbill Valves - 2 Linkers - 2 USB Cables - 2 Storage Bags