Introducing XPAND’s Cinema 3D Glasses - the STANDARD/NON-WASHABLE model X103-C1. Featuring a replaceable CR2032 battery, unfoldable arms, and an impressive battery life exceeding 300 hours. These glasses operate within a shuttering frequency range of 96 to 240 Hz, ensuring smooth and seamless viewing. With a stereo contrast ratio of 2000:1, coupled with a lens transparency of 37%, immerse yourself in stunning cinematic experiences like never before.