21SpecificationsInfrared wave length 850 nmTransmitting channel(subcarrier frequency) 1 frequency from 4 selectable frequencies (CH1: 2.30 MHz,CH2: 2.80 MHz, CH3: 3.20 MHz, CH4: 3.80 MHz)Tone signal 32.768 kHzOscillating system Crystal control PLL synthesized systemCoverage distance Approx. 20 m {66'} (line-of-sight distance along the opticalaxis)[Using Infrared Receiver (WX-LR100) and Infrared Sensor(WX-LS100), CH1]Effective reception range Approx. 8 m {26'} in radius [from Infrared Sensor (WX-LS100)]Modulation sensitivity ±12.5 kHz FM (in 90 dB SPL 1 kHz)Max. modulation sensitivity ±40 kHz FMMicrophone type Unidirectional electret condenser microphoneFrequency response 100 Hz - 10 kHz (50 μs emphasis on 1 kHz basis)External input –14 dBV ø3.5 stereo mini jack (monaural mix)Required batteries Rechargeable battery: Nickel metal hydride battery of AA size(2 000 mAh to 2 100 mAh) x 1 pc.Dry cell: Alkaline battery of AA/LR6 size x 1 pc.Battery life (Duration) (At 25 °C normal temperature for continuous use)Around 6 hours (Battery indicator: Green light and orangelight when using Panasonic's nickel metal hydride batteries ofHHR-3M Series)Around 5 hours (Battery indicator: Green light and orangelight when using Panasonic's Alkaline batteries of LR6EJSeries)External power supply 3.3 V DC (Supplied from the optional Battery ChargerWX-LZ150)Operating temperature range 5 °C - 35 °C {41 °F - 95 °F}Dimensions 41mm (W) x 37 mm (L) x 207 mm (D){1-5/8"(W) x 1-15/32"(L) x 8-5/32"(D)}Weight Approx 105 g {0.23 lbs.} (excluding battery)Finish Microphone head: black coatingGrip Silver metallic coatingWeights and dimensions indicated are approximate.Specifications are subject to change without notice.