How to use: Before use, twist the light switch in the correct direction. A white diaphragm inside can be removed to turn on the light. Designed for Slushi FS301/FS300: Features a plug-and-play design with a capsule-shaped lighting module that fits the machine's bottom slot. No tools or installation required—simply place it in to activate. Wireless Remote Control Dynamic Light Effect System: Includes 13 colors and 4 light effects (flash, strobe, gradient color mixing, party flash). An ideal accessory for enhancing the slushie machine experience. Non-Interference Operation: The ultra-thin design (30mm x 20mm) fits discreetly within the machine slot without blocking the feeding or observation area. The bottle cap size precisely matches the mixing container’s bottom slot for easy placement and activation. No installation or tools needed. Fun for Parties: Adds a vibrant, festive touch to events such as birthday parties, wedding receptions, or holiday gatherings. The colorful lighting effects create a lively atmosphere, making your slushie machine a focal point. Color: Transparent Material: Plastic Package Contents: 4 x Lights, 1 x Remote Control Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement error allowance is +/- 1-3 cm.