Feature: 1. Simulated sucking, imitate the baby sucking action, make sucking more comfortable. 2. You can set your pump strength based on your preference, meeting different need. 3. A closed system keeps breastmilk from backing up into the motor or tubing to ensure hygiene. 4. Cushions fit your body better, saving your time and increasing your efficiency. 5. Portable and compact, with USB cable, can be used anywhere or charge. 6. Food grade silicone, BPA free, eco-friendly, safe and non-toxic. Specification: Condition: 100% Brand New Item Type: Breast Pump Input: DC5V/ 1APower: 5WFrequency: 50HzMaterial: PP, ABSHost Size: Approx. 10.5x8cm/4.1x3.2inGear 1-3: MassageGear 4-6: Sucking Gear 7-9: Deep sucking Usage:1. Install the silica gel pad, and make sure the pad covers the breast pump completely at the edge of the pad. (if there are gaps, there will be air leakage, no suction.)2. Install the suction valve, please ensure that the suction valve is firmly installed.3. Place the anti-silicone cup of the breast pump. If so, please check whether the edge of the cup is covered tightly.4. Screw on the backflow preventer of the breast pump.Make sure the sealing effect to avoid air leakage.5. Connect the three-way tube of the breast pump to the main engine and the milk bottle respectively.6. Plug in the power, and it can be started up for use.. Package List: 1 x Host2 x Breast Pump2 x Milk Bottle Lid1 x Straw1 x USB Cable1 x Manual2 x Breast Pump Lid Note: 1. When choosing the adapter, please choose the normal adapter head,1A current size adapter can be.2. If the current of the selected adapter is less than 1A, the screen will be lit when it is plugged in, but it cannot be opened. At this point, the charging head should be replaced.