With the LG AG-S250 3D glasses and accessories, active watching makes the top-rated action movies seem to jump out of the screen with vivid colors and audio. Wear these wireless communication glasses for hours thanks to the light weight of the frames and the adjustable nose pads that ensure comfort. The smooth surface of the frames keeps the glasses comfortable against your skin, and you can relax knowing that the protective coating on the plastic will minimize scratches and stains. The shutters of these shutter glasses are made of LCD, or liquid crystal display, and the contrast ratio is a maximum of 1000:1. The open time is under 2.0 ms, and the close time is under 0.3 ms. Clean the surface of the shutters of the shutter glasses carefully to avoid damaging the liquid crystal material. Never use chemicals, and keep sharp tools away from the surfaces. LG has redefined 3D technology in these glasses and accessories so you can enjoy all of your favorite brands of active audio 3D video games, sports, and movies. Typical operating time when the glasses are on is approximately 40 active hours. The net weight of these glasses is 36 grams, and the glasses are 6.5 inches wide, 1.6 inches high, and 6.6 inches from front to back. A power button sits on one arm. To power up the glasses, press the power button one time, and you will see an LED indicator red light blink once. After turning on the LG AG-S250 3D glasses, they will automatically connect with the closest television or mobile projector with the strongest signal. If several brands of TVs are present, the glasses will connect with the , electronics, provided the device supports the RF technology. Turn the glasses off manually, or they will turn off automatically after one minute of no 3D signal. To charge the internal battery in the glasses, connect the 8-pin mini USB charging cable to the USB port, which is under the power button. Charge the glasses via a television or a computer until the LED light turns green. Typical charging time is about two hours. Wear the 3D active glasses alone or over other glasses. If you wear the LG AG-S250 active 3D glasses with other glasses, adjust the nose pads up 90 degrees for optimal comfort. The LG AG-S250 3D glasses come with a variety of accessories besides the USB cable. Additional accessories include a storage pouch, a quick start guide, and a manual on CD. LG provides exceptional customer service for this model and accessories as well as the AG-S100 model and other electronics devices, such as laptops, cameras, Blu-ray players, phones, and more, making this brand competitive with other electronics companies. Always observe safety recommendations when using the AG-S250 3D glasses, and remember that some people experience headaches and fatigue after wearing the glasses for a long period of time. With the LG AG-S250 3D active shutter glasses, your enjoyment of high-tech audio and video promises to be larger than life.