Shure BLX14R/MX53 Wireless Rack Mount Presenter System with MX153 Earset Microphone

The Shure BLX14R/MX53 is a Wireless Rack Mount Headset System with SM35 Headset Microphone ideal for speech and other applications requiring low-profile discreet placement where improved gain before feedback over lavalier microphones is desired. With rack-mount analogue wireless transmission. Combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage. Product Specifications: Working Range: 91 m (300 ft) Line of Sight Audio Frequency Response: 50 to 15,000 Hz Dynamic Range: 100 dB, A-weighted, typical Operating Temperature: -18°C (0°F) to 57°C (135°F) Gain Adjustment Range: 26 dB Input Impedance: 1 MΩ RF Transmitter Output: 10 mW, typical Power Requirements: 2 LR6 AA batteries, 1.5 V, alkaline Dimensions: 4.33 in. X 2.52 in. X 0.83 in. Weight: 2.6 oz. (75 g)