【RECHARGEABLE BATTERY】Diffuser Built-in Battery that can be fully charged in approximately 6.5 hours. After being fully charged, it can last for up to 7 hours. 【CHARGING GUIDE】After receiving the product, please use the attached USB cable and power plug to charge it. (Special Note: During charging, the indicator light will keep flashing. When all 4 indicator lights are always on, it means that the battery is fully charged.) 【CONVENIENT CHARGING】Equipped with a modern USB-C charging port, it is very convenient to charge and perfectly compatible with various modern devices and chargers, allowing you to avoid the trouble of charging. 【CORDLESS DESIGN】This small diffuser adopts a cordless design, freeing it from the constraints of power sockets, making it easy to move and place in different locations. It is extremely convenient whether you are traveling or using it in different rooms. 【7 LED COLOR-CHANGING LIGHTS】The diffuser features 7-color LED color-changing lights that automatically cycle through different colors. Additionally, you can choose to turn the lights on/off. Simply press and hold for 2 seconds to easily set up. 【SILENCE AND SERVICE】 This electric ultrasonic diffuser is extremely quiet during operation with minimal noise. It will not cause any disturbance to your daily life. If you have any questions, please contact us! The Endless Charm of the Wireless Diffuser In our daily lives, we yearn for small items that bring comfort and beauty, and this wireless diffuser is undoubtedly an excellent choice. Its cordless design frees us from the constraints of power outlets, allowing for easy movement and placement, making it incredibly convenient. The 7-color LED lights add an extra touch of charm, serving as both atmosphere lights and nightlights. Equipped with a built-in RECHARGEABLE BATTERY, it boasts a battery life of approximately 7 hours and automatically shuts off safely when water runs out. The ultra-quiet design ensures minimal operating noise, causing no disturbance to our daily lives. The USB-C charging port is both convenient and fast. In summary, this wireless diffuser, with its cordless design, 7-color LED lights, impressive battery life, ultra-quiet operation, and convenient charging port, has become an indispensable and delightful companion in our lives.