LED circuit board with 3 batteries for light-up bottles at festival food stalls. Unused. Size: Width 2.4cm, Length 2.4cm Weight: 5g Light colors: Red, Blue, Green, 3-color rainbow 3 patterns: rapid flashing, slow flashing, etc. The quantity can be customized if you send a message, but please order 10 or more. Can be used with baby bottles, pineapple bottles, light bulb bottles, strawberry bottles, etc., if the size fits. I will send items that have been tested and confirmed to work, but I will include spares in case of damage during shipping. No claims or returns accepted. Shipped via Yu-Packet. Night stalls Light-up toys