The portable bottle warmer easily solves milk heating problems in cold weather and during outdoor meals. Compact, it preserves heat for up to 24 hours. With its adjustable temperature from 38 to 55 °C (100 to 131 °F), it ensures constant circulation heating, guaranteeing effective maintenance of water and milk temperature. Made of high-quality PU leather and durable electronic components, it offers excellent heat retention. The device is equipped with a secure USB interface compatible with a Type-C charging cable, allowing easy connection to outlets, power banks, or car chargers for convenient and stable use. In addition, the bottle warmer adapts to a variety of baby bottles thanks to its adjustable hook-and-loop fasteners that accommodate different shapes and sizes.