Sennheiser ew 112 G3. Type: Stage/performance, Microphone sensitivity: 130 dB, Microphone direction type: Omni. Connectivity technology: Wireless, Connector(s): XLR-3, 6.3mm, Operating frequency: 516 - 865 MHz. Receiver dimensions (WxDxH): 202 x 212 x 43 mm, Receiver weight: 900 g. Battery type: AA, Power supply type: AC/DC, Battery technology: Alkaline. Colour of product: Black