Description Want to have a cup of wine in the bar with a novelty mug? This color changing mug will be your perfect choice! Made of environmentally friendly acrylic material, eco-friendly, containing no harmful substance. You can drink water, coffee, tea this creative water sensitive mug, and you will get different feelings. A good companion for everyday use. Features - Light color: red, yellow, green, blue illusion- Material: Acrylic.- Size: caliber 8cm* height 9.7cm bottom 5.5cm.- Battery power: 2 built-in CR2025 button batteries, can be replaced.- Product capacity: 285ml.- Battery power: 2 built-in CR2025 button batteries, replaceable;- Battery available time: 24 hours in a row.- Perfect a cup of wine in the bar with a novelty mug.- Made of environmentally friendly acrylic material, eco-friendly, containing no harmful substance.- You can drink water, coffee, tea this creative water sensitive mug- You will get different feelings.- A good companion for everyday use.Packing list: 1 x mug