"[Ultra-mini portable air pump]: As a wireless portable air pump, it weighs only 5.64 ounces and has a volume of only 3.03 * 2.26 * 2.02 inches. That's why it is very comfortable for backpackers to carry. It is not only mini, but also has a strong pressure of 4.5kPa. In addition, in order to cope with various on-site situations, it also has an IP55 waterproof rating.Built-in 3600mAh rechargeable lithium battery: Large-capacity lithium battery with sufficient battery life. It can be used continuously for one hour. But to avoid overheating of the air pump, do not use it continuously for more than 15 minutes. It takes six hours to fully charge. In an emergency, it can be used as a rechargeable battery. You can install a 1.5 iPhone 12.Complete applicability: There are 5 different types of air nozzles. Therefore, it is suitable for most inflatable products, such as: inflatable sleeping pads, boats, inflatable beds, inflatable mattresses and inflatable toys, lifebuoys and vacuum storage bags."