Bluetooth Sound Beer Cup 304 Stainless Steel Vacuum Double-layer Portable Insulated Cup Bluetooth Audio Beer Mug With Bottle Opener Features: This smart water bottle is made of stainless steel material, which is food grade safe and easy to carry. This smart water cup has Bluetooth function and can hear music at any time. It has a and colorful light effect, and can listen to music while drinking water. Product Description: Includes: 1x cups This smart water bottle is made of stainless steel material, which is food grade safe and easy to carry. This smart water cup has Bluetooth function and can hear music at any time. It has a and colorful light effect, and can listen to music while drinking water. Easy to operate: Use Bluetooth search on your mobile phone, connect directly via Bluetooth, and then you can play music lists. This is easy to operate, and it has the authority button, the song button, and the previous song button. It is suitable for most bottle holders in cars, bicycles, tourism, etc. The Bluetooth music cup is a unique gift for parents, boyfriends, colleagues, and its beautiful appearance, moderate water cup ability, and innovative design.