PIVA Bl7 bx7 - 15W Semiconductor Mobile Phone Cooler

Instructions for freezing conditions: To achieve a freezing effect with the phone cooler, please make sure the following conditions are met: Adapter voltage requirement: Use an adapter with an output voltage higher than 5v3a for the power supply. Selecting the charging cable: Make sure that you use the standard charging cable provided by us for connection. Room temperature condition: Make sure the room temperature is below 25 °C during operation. Important warning: Please note that this device is a phone cooler, not a professional ice maker. Avoid operating the device in an unloaded state for a long time to achieve a freezing effect, as this may cause damage to the device or pose a safety risk. If the product flickers, it means that the power supply is insufficient. You need to use a 5v3a plug to supply power and connect it with our charging cable. This is not a quality problem.