Features Imitate the babys feeding pattern, at the beginning of milk suction process, high frequency mode will gently stimulate milk lactation, when the milk starts flowing, it will change to slow and deep suction, reducing suction time and increasing milk secretion. 2 modes (breast pumping massage) and 5 levels of suction for option, always gives you the most comfortable milk s**king 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 and integrated design, 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; 30dB low noise, will not disturb the sleeping baby. Built-in 800mAh large capacity battery with long working time, easy to get charged through power bank, laptop, desktop, AC adapter (not included), and more. Specifications Color: Blue, grey (optional) Material: ABS, PP, and silica gel Battery Capacity: 800mAh Input Voltage: 5V/1A Operation Temperature: 5~30℃ Storage Temperature: -20~60℃ Operation/Storage Humidity: 15~90% Operation/Storage Press: 90~106Kpa Capacity: 180ml Product Size: 15 x 11.5 x 7.8cm/ 5.9 x 4.5 x 3.07inch Product Weight: 233g/ 8.2oz Package Size: 18 x 15 x 11cm/ 7.08 x 5.9 x 4.3inch Package Weight: 414g/ 14.6oz Package List 1 x Pump Motor with Milk Collector 1 x Bra Adjustment Buckle 2 x Plastic Ring 1 x Valve 1 x Charging Cable 1 x User Manual (English)