Description: Material: The 20oz multipurpose tumbler cup is made of stainless steel. It is hard and wear resistant, heat insulating, easy to hold and has a long service life.Wide Application: The music tumbler cup can be poured into various beverages such as water, juice, coffee, etc. Cold drinks can be kept warm for 24 hours and hot drinks can be kept warm for 12 hours to meet your different needs.Design: The base of the Stainless steel speaker cup is equipped with a detachable multipurpose audio system and LED light, allowing you to enjoy music while drinking water.Creative Gift: The Multipurpose speaker cup is beautiful and practical, and is a creative gift for family and friends.Please Note: When cleaning the cup, unscrew the screws of the speaker to separate it from the cup to avoid breaking it. The speaker can be charged by USB. Specification: Material: 201 Stainless Steel Size Chart: 7.5cmx7.5cmx23cm/2.95inchx2.95inchx9.06inch Package Includes: 1x Cup1x Straw1x Speaker1x USB cable Note: Please allow slightly errors 1-2cm differences due to manual measurement.