Key features

• •ULTRA DISCREET --- SP209 is invisible and comfortable to wear.Invisible in the ear for 7 out of 10 people.You have Freedom to Jogging, Biking or Enjoy Your Drama, Concert.
• •REFUSE WHISTLING and REDUCE NOISE --- SP209 solved biggest problem - feedback. With advanced feedback management systems that help detect and eliminate it before it reaches your ears. Plus,SP209 provide a more NATURAL sound.
• •FULLY UPGRADE：With 12-Band Digital Processing and 6 Channels Independent Compression-Amplification Channels, Almost No Background Noise,10 Volume Levels Offer More Rich Sound.2 Buttons Help You Adjust the Volume Quickly Without Adjusting the Volume Cyclically
• •IT'S OPEN-FIT --- Open-fit hearing amplifiers are styles that don't block the ear canal. You will not feel that the ear is plugged up.With slim sound tube, extremely comfortable ear domes and tiny device, it's virtually invisible and can't feel it when you're wearing.
• •1 YEAR QUALITY ASSURANCE --- We are confident that our device are manufactured under strict quality standards to give our customers best experience, every product includes a one year warranty guarantee& 90 days money back guarantee, we take care of all quality-related issues, you don't have to buy extend warranty. Guaranteed!