IL-TM-1115 The feature of this product is that we add a speaker on the basis of the thermos cup, which enable users to enjoy the beautiful world brought by music at the same time. The body of this music water cup has two functions, i.e., heat preservation and cold preservation, and is used for coffee in the office, cold beer for outdoor gatherings, or regular drinking water, etc.. It is suitable a wide range of senario. The bottom of the cup is a bluetooth speaker. You can play music when connected to bluetooth, and the bottom of the speaker is designed with anti-slip to prevent the cup from falling. The whole product is 6-level waterproof, safe and carefree. The speaker comes with a lithium battery, and can play music anytime and anywhere with different colors and styles. Please check with us for the best rate of customization.