Headphone out volume control80mW2 'AA' batteriesRF indicatorLow-battery indicator3.2oz (90g)</br></br>Product Description</br></br>The Galaxy Audio AS-900R receiver works in combination with the Galaxy Audio AS-900T transmitter for a complete entry-level wireless system and a solution for monitoring freedom. The AS-900R has an 80mW headphone output with volume control?? RF and low-battery indicator. It runs on 2 'AA' batteries..</br><br/>http://www.amazon.com/gp/product/B004FYCUQE