Is Batteries Included: Yes Luminous Flux: 249-2000 Hign-concerned Chemical: None Installation Method: Self-Contained Certification: CE,FCC,RoHS Origin: Mainland China Item Type: Beads Brand Name: YSRSAI Shape: FAIRY Model Number: ws2812b Power Source: DC Voltage: 5V Name: Smart Pixel String Light Size: 5M/10M/20M Output Voltage: DC5V Power Source: USB Type: RGBIC String Light Installation Area: Indoor & Outdoor Feature 1: Festival Atmosphere Feature 2: APP/Voice Controller Feature 3: Led Lights for decoration Feature 4: Celebratory Atmosphere Feature 5: Led night…