Sennheiser HDE 2020-D-II US Tour guide 2020 stethophone receiver, ISM band (926-928 MHz)

Sennheiser HDE 2020-D-II US Tour guide 2020 stethophone receiver, ISM band (926-928 MHz) Sennheiser HDE2020-D-II-US 6-Channel RF Stethoset Receiver from Sennheiser is a wireless listening headset that allows you to listen to any RF transmission at a matching frequency. Headset features in-ear earpieces for a secure and comfortable fit that helps to block out external noise. The headset has 6 selectable RF channels, which are displayed on the backlit LCD display. The headset has an auto on/off function that is triggered by wearing or removing the headset. A large rotary volume control makes it easy to adjust the volume, and the integrated rechargeable battery provides hours of operation. Sennheiser HDE 2020-D-II US Main features 6 Selectable Channels RF Communication Auto On/Off Large Controls Backlit Display Integrated Rechargeable Battery Specifications Type Stethoset, RF RF Frequency Range 926-928MHz Modulation 2 FSK # Of Channels 6 Frequency Response 100Hz - 7kHz SPL 120dB THD < 1% Battery Type/Life 830mAh Lithium-polymer8 hours Operating Temperature 32 to 122°F (0 to 50°C) Dimensions (HxWxD) 9.4 x 4.9 x 0.8" (245 x 125 x 20mm) Weight 2.6 oz (73g) (with Accupack battery) Packaging Info Package Weight 0.25 lb Box Dimensions (LxWxH) 9.4 x 5.2 x 0.4"