23Viewing 3D images on TVUsing PrecautionsLensDo not apply pressure to the liquid crystal shutter. Also, do not drop or bend the 3D Eyewear.Do not scratch the surface of the liquid crystal shutter with a pointed instrument etc. Doing so maycause damage to the 3D Eyewear, and reduce the quality of the 3D image.Cautions during viewingDo not use devices that emit strong electromagnetic waves (such as cellular phones or personaltransceivers) near the 3D Eyewear. Doing so may cause the 3D Eyewear to malfunction.The 3D Eyewear cannot operate fully at high or low temperatures. Please use within the specifiedusage temperature range.If the 3D Eyewear is used in a room in which fluorescent lights (50 Hz) are used, the light within theroom may appear to be flickering. In this case, either darken or switch off the fluorescent lights whenusing the 3D Eyewear.Wear the 3D Eyewear correctly. 3D images will not be correctly visible if the 3D Eyewear is wornupside down or back-to-front.Other kinds of displays (such as computer screens, digital clocks, or calculators etc.) may be difficultto see while wearing the 3D Eyewear. Do not wear the 3D Eyewear when watching anything otherthan 3D images.For comfortable viewingView from at least the recommended distance (3 times the effective height of the screen),Recommended Distance:For a 55-inch television, 6.89 ft (2.1 m) or moreFor a 60-inch television, 7.55 ft (2.3 m) or moreFor a 65-inch television, 7.87 ft (2.4 m) or moreWhen the top and bottom area of the screen is blackened, such as when playing movies, view thescreen at a distance 3 times further than the height of the actual image.(That makes the viewing distance closer than above recommended distance.)Stop using the 3D Eyewear immediately if your skin feels unusual.In rare cases, the paint or materials used in the 3D Eyewear may cause an allergic reaction.Stop using the 3D Eyewear immediately if you experience any redness, pain, or itching on the noseor temples. Prolonged use may cause such symptoms due to excess pressure, which may result inthe user feeling unwell.Use in area of Bluetooth ® signals from other devices may interfere with 3D Eyewear operation.Using radio wavesThis unit uses the 2.4 GHz radio frequency ISM band (Bluetooth ®). However other wireless equipmentmay use the same frequency. Be sure to take note of the following to prevent radio wave interferencefrom other equipment.Restriction of useFor use only in your country.Range of useThe range of use is up to approximately 10.5 ft (3.2 m). The range may be less depending on thestructure of the building, the environment and any obstacles between the receiver and the transmitter.Such obstacles as reinforced concrete walls and metal doors, in particular, obstruct the transmitter’ssignals.Interference from other equipmentDue to radio interference, malfunctions may occur if the unit is placed too close to other equipment.We recommend keeping the unit as far away as possible from the following devices:Bluetooth ® devices other than this unit, wireless LAN, microwaves, office automation devices, digitalcordless telephones and other electronic devices.The unit is designed to automatically avoid radio interference from these household devices.However malfunctions may happen when radio interference occurs.