Features: Good quality NE555 flashing light pendant, with adjustable flashing frequency enhances the atmosphere of rooms. Durable and easy to install; Without battery, safe and reliable. Built in NE555 chip, adjustable flashing speed; . Suitable for people, housewives, and DIY enthusiasts who enjoy creative decoration. Can be used for home decoration, party decoration, store display and other occasions, creating a romantics and warm atmosphere. Note:This product is a kit and needs to be assembled by yourself Specifications: Item:NE555 Flashing Light Pendant Working Voltage: DC3V (1 CR2032 Button cell) Size: As Pictures Package Types: Without Battery/ With Battery Quantity: 1Set Note: This product is a kit and needs to be assembled by oneself Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1Set NE555 Flashing Light Pendant