Identical to the glasses provided with the PC DELL nvidia 3D vision. Charges through USB with a cable provided. Protective pouch provided. These glasses are active, ie they require a transmitter in front that synchronizes the glasses with the screen. In the case of a DELL laptop (3D compatible), the transmitter is the next WEBCAM. No need to buy it. The price is a bit expensive but there is no alternative to my knowledge.
