Product Description: Universal Active Shutter 3D Glasses Key Features & Compatibility: - 3D Technology: Utilizes advanced active shutter binocular technology for a non-immersive viewing experience. - Sync Technology: Compatible with projectors and TVs supporting -Link 3D synchronization. - High Refresh Rate: Designed for devices with a 96-144Hz refresh rate for smooth, flicker-free 3D. - Wide Viewing Angle: Offers an approximate 150-degree horizontal viewing angle. - Simple Connectivity: Connects via USB for power and synchronization; no external base stations required. - Long Battery Life: Built-in 3.7V rechargeable battery provides up to 40 hours of continuous use. - Ergonomic Design: Lightweight plastic frame in blue for comfortable extended wear. - Package Includes: 1x 3D Glasses, 1x USB Charging Cable. Important Compatibility Note: To ensure these glasses work with your 3D projector or TV, please verify one of the following: 1. Your projector/TV must emit a -Link 3D synchronization signal. When connected to a 3D source (e.g., Blu-ray player, gaming console) and used with a compatible 96-144Hz -Link 3D projector/TV, the glasses will function perfectly. 2. Alternatively, check if your projector/TV bears the official -Link logo, indicating built-in compatibility. Disclaimer: Product specifications and compatibility are based on standard manufacturer descriptions. We recommend confirming your device's technical specifications prior to purchase.