Experience superior 3D viewing with these cutting-edge active shutter glasses! Featuring a lightning-fast 144Hz refresh rate (surpassing other 120Hz or 96Hz models), these rechargeable glasses boast an on/off switch for ultimate convenience. Enjoy high-definition visuals free from ghosting and flickering. These are not disposable 3D glasses! Seamless Compatibility: These active shutter 3D glasses utilize DLP Link technology, ensuring quick and easy pairing with all compatible DLP Link projectors. (Note: Not compatible with TVs) 2D to 3D Conversion: Easily switch between 2D and 3D viewing. If you've paired the glasses and aren't seeing the 3D effect, simply press the volume up/down buttons on your remote, then press the center button on the glasses to switch left and right eye views for optimal 3D experience. Effortless Operation: One-button operation with automatic 5-second standby and 5-minute power-off features. No need to fiddle with projector settings. The built-in, high-capacity rechargeable battery provides up to 45 hours of continuous use after a full USB charge, with a standby time of 180 days. Customer Satisfaction Guaranteed: Your satisfaction is our top priority. If you encounter any issues with your product upon receipt (damage, incorrect quantity, etc.), please contact us immediately. We're committed to providing excellent customer service.