Quick Heat Retention, Heating & 5 Temperature SettingsThe bottle warmer features high thermal conductivity and includes an 18W adapter, allowing a 240ml bottle to heat from 20C (68) to 52C (125.6) in just 36 minutes. (*Heating time may vary depending on external conditions and usage environment.) It offers five adjustable temperature settings: 38C, 40C, 42C, 46C, and 52C, so you can choose the most comfortable temperature based on the weather and your personal preference. Real-Time Temperature Display & Easy OperationThe LCD display allows you to easily monitor the milks temperature, ensuring its always just rightneither too cold nor too hot. This product automatically powers on when the cable is connected. To turn it off, simply press and hold the button for 3 seconds. (*To restart, unplug and reconnect the cable.) High-Quality Materials & Easy MaintenanceThe inside is made of high-quality polyester that gently holds the baby bottle. It is finely stitched to prevent tearing, even with repeated use. The exterior is made of PU material, which can be easily wiped clean if it gets dirty.(*Please avoid washing the unit with water to prevent malfunction.) Wide Compatibility & USB PoweredThe milk warmer comes with a Velcro strap, making it compatible with bottles of various shapes and sizes, including cans and cartons. (Recommended size: bottles with a diameter of approximately 1.97-2.95 inches.) Since it is USB-powered, you can use an AC adapter, power bank, or car charger depending on the situation. (*This product does not have a built-in battery and must be plugged in during use. Please note that it cannot be powered by a 5V 1A mobile battery.)