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 100% success after installation. The installation of the circuit requires the buyer to have experience in the circuit, please read the 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:A:Red Material:ABS Package Contents: 1 * 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.