Rocketfish RF-RBWHP01 Rocketboost Wireless Stereo Headphones Over-the-ear design:Provides comfortable wearability Wireless designProvides a wireless range up to 115' Adjustable volume control:For simple operation Docking station:Recharges the batteries for reliable use Up to 10 hours battery life:For long-lasting use before recharging 20Hz - 20kHz 3dB frequency response: For faithful sound reproduction 86dB sensitivity: For powerful sound