Keep your Willow Pump charged and ready to go with a spare charger. Completely mobile, wireless, and hands-free, everything fits inside the pump without cords or attachments. With a rechargeable battery that lasts up to 5 pumping sessions, Willow’s all-day battery life lets you pump wherever life takes you. Exclusively for use with the Willow Wearable Breast Pump. 90-day limited manufacturer’s warranty.