English 21Bluetooth wireless technology*2Standard ComplianceBluetooth 3.0Frequency Range2.402 GHz - 2.480 GHz*1: The frequency and channel differ depending on thecountry.*2: Not all the Bluetooth compatible devices areavailable with this TV. Up to 5 devices can be usedsimultaneously (except the 3D Eyewear and TouchPad Controller).■ 3D EyewearDimensions (W × H × D)164.7 mm × 41.0 mm × 170.7 mmMassApprox. 34Usage temperature range0 °C - 40 °CBatteryCoin-shaped lithium battery CR2025Operation timeApprox. 75 hours in continuous use of thebattery made by PanasonicMaterialsMain body / Lens sectionResinLens sectionLiquid crystal glassNote● 3D Eyewear and Touch Pad Controller use Bluetoothwireless technology.● Design and Specifications are subject to changewithout notice. Mass and Dimensions shown areapproximate.● For the information of the open source software, referto [eHELP] (Support > Licence).● TH-48AX670H, TH-55AX670H comply with ChinaTerrestrial Television National Standard (GB20600-2006) Mode-C=3780.Digital terrestrial TVGB20600-2006 free-to-air TV broadcast receptionReceiving channels (Analogue TV)VHF BAND2-12 (PAL/SECAM B, K1)0-12 (PAL B AUST.)1-9 (PAL B N.Z.)1-12 (PAL/SECAM D)1-12 (NTSC M Japan)2-13 (NTSC M USA)UHF BAND21-69 (PAL G, H, I/SECAM G, K, K1)28-69 (PAL B AUST.)13-57 (PAL D, K)13-62 (NTSC M Japan)14-69 (NTSC M USA)CATVS1-S20 (OSCAR)1-125 (USA CATV)C13-C49 (JAPAN)S21-S41 (HYPER)Z1-Z37 (CHINA)5A, 9A (AUST.)Aerial inputVHF / UHFOperating conditionsTemperature0 °C - 40 °CHumidity20 % - 80 % RH (non-condensing)Built-in wireless LANStandard compliance and Frequency range*1IEEE802.11a/n5.15 GHz - 5.35 GHz, 5.47 GHz - 5.85 GHzIEEE802.11b/g/n2.400 GHz - 2.4835 GHzSecurityWPA2-PSK (TKIP/AES)WPA-PSK (TKIP/AES)WEP (64 bit/128 bit)