The Nady DW-22 Dual Digital Wireless Lapel/Headset Microphone System brings you the superior sound quality of digital audio technology in a simple, easy-to-use and reliable package. Complete with two body packs, and 2 headsets (use two at a time – one per body pack), this system couldn’t be easier to set up and operate. After inserting new AA batteries in the body packs, just connect the AC adapter as well as the audio output that is most suited to your set up (either microphone or line level) to the receiver and turn them all on. This system is loaded with top professional operating features and offers the best performance and price value available in digital wireless. With 48 kHz / 24-bit digital audio conversion, low latency and clear channel operation in the UHF 900MHz band, the Nady DW-22 Dual Digital Wireless Lapel/Headset Microphone System provides interference-free performance for any application. Specifications Overall system: Frequency response: 20Hz~20kHz 3dB Digital format: 48kHz / 24 bit / QPSK modulation Dynamic range: 120dB THD: Weight and Dimensions: DW-22 receiver: 0. 8lbs / 8” x 6” x 1. 75” Digital LT: 0. 15lbs / 2. 5” x 4. 25” x 0. 5” DW-22 RECEIVER Sensitivity: -94dBm Output Connections: ¼"" unbalanced jack (line) 2 XLR Balanced (mic) Power Requirements: 13. 5VDC / 400mA DIGITAL LT TRANSMITTER RF Power Out: +13dBm, (50mW maximum allowed by FCC) Audio Input: 1/8” TS locking mini-jack, for head worn or lavalier microphone Battery Type: 2 AA Alkaline Battery Life: Up to 11 Hours