Sennheiser XSW 2-835 B Wireless microphone

Transmiter

Power supply: 2 AA size batteries, 1.5 V

Operating time: Approx. 10 hrs

Microphone: Dynamic; E-835

Reciver

RF output power: 10 mW

Frequency range: B: 614-638 MHz

Modulation: Wideband FM

Receiver Principle: Double superheterodyne

Diversity principle: True Diversity

Frequency channels: 8 frequency banks, each with up to 12 factory-preset channels

Output: 1/4“ (6.3 mm) jack socket (unbalanced): +6 dBu, XLR socket (balanced): +12 dBu