Price reduced! ✨ The light automatically flashes when you pour a drink. A glass that lights up automatically with a sensor. - Model Name: Sensor Neon Glass - Function: Automatic lighting function - Material: Polystyrene resin Sensor part: Stainless steel - Design: Decorative bottom The battery was weak during storage, so the reaction is weak, but I was able to confirm the operation. See the pictures for reference. The battery is CR2025. The sparkle is weak, so please prepare a new battery when you receive it. Thank you for viewing. Yu-packet is too big for the box, so please understand that it will be sent by regular mail (teikeigai) for 450 yen, with the seller covering the shipping cost. Parties During a power outage On the rocks Watered drinks Whiskey