RF Design for Easy Operation- 3D RF Active Shutter Glasses for use with all JVC 3D projectors.- Requires PK-EM2G 3D RF Emitter.- Optically matched for high brightness and color accuracy.- Can be switched for 2D viewing with 3D/2D Mode Select.- USB charging cable and protective bag provided.- 100 hour operation with full 2.5 hour charge.- Compatible with PK-EM2G 3D RF Emitter. As a set, the PK-AG3G & PK-EM2G may be used with previous JVC 3D Projectors.- Not compatible with PK-EM1 3D IR Emitter.- Weight: 1.34 ounces.