Imitate the baby's feeding pattern, at the beginning of milk suction process, high frequency mode will gently stimulate milk lactation, when the milk starts flowing, it will ce to slow and deep suction, reducing suction time by 50 percent and increasing milk secretion by 30 percent .2 modes (breast pumping and massage) and 5 levels of suction for option, always gives you the most comfortable milk sucking experience. The memory function will remember the settings used last time, making your milk pumping more efficient.Wearable design, freeing your hands for housework, playing with your lovely baby, and more compact size, easy to assemble, suitable for using at home, office, during travel, etc.Made from premium ABS, PP, and silica gel, eco-friendly and skin-friendly low noise, will not disturb the sleeping baby.Built-in 800mAh large ty battery with long working time, no trouble of frequent charging.SpecificationsColor: Pink, green and grey(optional) Material: ABS, PP, and silica gelBattery ty: 800mAhInput Voltage: 5V or 1AOperation Temperature: and5-30Storage Temperature: -20-60Operation or Storage Humidity: 15-90 percent Operation or Storage Press: 70-106KpaProduct Size: 15 x 11 x 8cm or 5.9 x 4.3 x 3.1inchProduct Weight: 243g or 8.5ozPackage Size: 19.5 x 15 x 11cm or 7.6 x 5.9 x 4.3inchPackage Weight: 440g or 15.5ozPackage List1 x Pump Motor with Milk Collector2 x Bra Adjustment Buckle2 x Plastic Ring1 x Valve1 x Charging Cable1 x User Manual (English)Note:1. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.