[DLP-Link 3D Glasses] Active shutter 3D glasses use radio frequency to transmit signals can work without a transmitter Compared with the traditional IR signal transmission, the RF signal connection speed is faster the continuity is more stable 2 packs, super money saving! [Compatible Devices] RF 3D Active Shutter Glasses are suitable for most RF 3D signal TVs 3D projectors Compatible with 3D RF projectors: Dell S300, Dell S300wi, Dell S500, Dell 1510X, NP-110and, NP-115and, NP-210and, NP-215and, V-230and, PJD5133, PJD5523, PJD5233, PJD5152 , D315, D302, D101E, D303, EV-S21T, EV-S22T, etc [Easy to Use] Rechargeable Design 3d RF Glasses with On/Off Switch Automatic 5 seconds stby 5 minutes off Not disposable 3D glasses High definition, no ghosting, no flicker, clearer more stable than infrared signal connection Provide you with an excellent 3D visual experience!