Working voltage: 12V Working current: 15mA Number of lamp beads: 50 Product net weight: 70g The products which are suitable for electronic enthusiasts to study and repair circuits. We only that the products are in good condition before delivery, and cannot 100percent success after installation. The installation of the circuit requires the buyer to have experience in the circuit, please read the product description carefully before payment. Battery not include in the package ! It's DIY kits, needs to by yourself. Product name: Voice-activated LED light-emitting glasses kit Power supply mode: 2 x 23A batteries (not included) Item model number: AS123 Colour:B:Green Material:ABS Package Contents: 1 x DIY LED Light Glasses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.