Personal Sound Amplifier That Provides Up To 50 Db. Of Sound Amplification. It's Very Discreet And Resembles A Cell Phone Earpiece, So You No Longer Have To Hide It. Flexible Ear Hook Easily Adjusts To Fit All Ear Shapes And Sizes And Converts For Right/Left Ear Wear. Equipped With A Hi/Low Switch To Vary The Sound Intensity And A Volume Control To Adjust The Level To Your Individual Needs. You Will Get Approximately 14 Hours Of Continuous Use With 2 Button Cell Batteries (Included). Amplifies Sound From 90 Ft. Away Ideal For: Conversations, Lectures, Theater, Hiking, Sporting Events, Watching Television, & More Includes 3 Silicone Ear Tips Operating Current: 10 Ma Speaker Impedance: 200 Ohm Output Power: 3 Mw Amplifier Frequency Response: 200-3500 Hz (High) 200-3200 Hz (Low) Made In China