We are Future 3D Technology Co, Ltd. based in Shenzhen , China. We are member of Tradekey.com since March, 2011. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in 3D glasses. Please find our product details below: 3D glass for cinema FT300 3D glasses for cinema power supply:CR2032 Battery Battery lifespan:300 hours Weight:38g Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.