Welcome to our store! Outstanding Features: Our 3D glasses use the latest active shutter technology, super-fast 144Hz refresh rate, high definition, no ghosting, no flicker, providing an amazing 3D viewing experience for you. Left/Right Eye Rotation: If you are wearing our 3D Active Glasses and do not see the 3D effect, simply click the "Power Button" once again to reverse the left and right eye view for synchronization; very convenient, no need to use the DLP projector. Long-Lasting Battery: The active 3D DLP glasses come with a built-in high-capacity rechargeable battery, continuous operation for 45 hours after a full USB charge, standby time of 180 days; Automatic 5-second standby and 5-minute shutdown, saving energy and stable. Lightweight & Comfortable: These active shutter 3D glasses are lightweight and portable to take with you, and can also be worn very comfortably over regular glasses, comfortable to wear for a long time. Satisfaction: Our customers are our top priority. If you find any problems with the product after receiving it, such as damage or incorrect quantity of goods, please contact the seller immediately, and we will do our best to provide you with satisfactory customer service.