... design(38g),memory material glass leg ,multi-format nose pad,gear to every kinds of facial structure,ensure amenity of ... requiresProduct structure: Rapid response LCD,IR receive window,Memory nose pad, Memory temples,Chargeabe battery,USB charge hole,charge indicator, ... Charge way USB, Charge time 4hr.Usage area:3D theater,family 3D TV,3D computer game. 3D Glasses for samsung 3D SMART TV, 3D TV FACTORY