MOACC 2013 Newest Economical UNIVERSAL Eyewear 3D Rechargeable Infrared IR (Bluetooth/RF NOT Supported) Active Shutter Glasses For Panasonic, Samsung, Sony, Sharp, LG, Toshiba, Philips 3D HDTVs -Black Fashion Design: Beautiful color, portable and comfortable. Light weight for long time wearing. Upgrade function: Press the power button one time to turn on/off glasses. Press the power button two time to change the left lens and right lens. Green consumption: Recharge with micro USB cable 3 hours recharging provides 50 hours operation. Automatic POWER OFF function: When 3D projector is powered off or not synchronized with 3D signal,3D glasses will be AUTO powered off after 31 seconds.