Liquid sensor blinking rainbow beer mug Pour any kinds of liquid in this cup automatically starts rainbow flash Auto light off when lequid finish Good for candle light dinner, wedding party, birthday party, bar, disco, any other celebration and unique gift Made from crystle looking food grade hard transparent plastic, this is not a glass Transparent Battery replaceable-CR2025 model No return policy, if damage item received can be return Easily can change battery CR2025 model 300 ml capacity Water proof in button Hot water can bare easily and any other drinks Please wash in running water, do not soak in sink Brand No Brand SKU 100231751_NP-1020489915 Model 0026