LR Baggs Element Active System<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Battery Type: Single 9V </span></li><li><span class="a-list-item"> Current Consumption: 0.5mA </span></li><li><span class="a-list-item"> Battery Life: 1000+ hours (alkaline) </span></li><li><span class="a-list-item"> Low Cut Filter: Fixed， 12dB/Oct. @ 45Hz </span></li><li><span class="a-list-item"> Signal To Noise: -92dB， unweighted </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41AdtcpMYCL.jpg" noproxy>