Features: High-quality materials: The music rhythms dance ferrofluid ornaments are made of high-quality materials. The ambient temperature of the product is between 0'C-60C. It is prohibited to use it in high-temperature environments, especially in high-temperature environments in cars in summer. Dancing with the music: This product is not a wireless speaker, does not have a speaker, does not emit sound, and does not need to be connected to any lines wired/wireless. The ferrofluid in the glass container will follow the rhythms of external sounds or music when turned on with one click. Easy to use: This music rhythms dance ferrofluid ornament is easy to use. Just place the sound receiving hole designed on the back of the product close to the sound source, and the ferrofluid will dancing. Wireless design: This dancing ferrofluid ornament has a built-in large-capacity battery, which can be recharged, has a long standby time and is easy to charge. Perfect gift choice: This unique musical rhythms dancing ferrofluid ornament is very interesting and is very suitable for giving to music-loving friends or family member on birthdays, Christmas, Thanksgiving and other festivals. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: plastic Size: 172*106*54mm Power: 10W Power input: 5V-2A Liquid tank capacity: 100ml Battery capacity: 4000mAh Charging time: about 8 hours Battery life: about 8 hours Package List: 1 x Music Rhythms Dancing Ferrofluid Light 1 x Correction Magnets