The product is a set of 2 3.8V 1900mAh 1S Lipo batteries designed for use with the HS440 Quadcopter and foldable remote control. These batteries provide power for the quadcopter and allow for extended flight times. With a high capacity of 1900mAh, these batteries offer a long-lasting charge for uninterrupted flying. The compact size of the batteries also allows for easy handling and storage, making them a convenient choice for RC enthusiasts looking to enhance their flying experience.