1.Small,Lightweight and comfortable to wear, 2.Color: Beige 3. Intelligent volume control function , Work with one A10 cell battery, Low power consumption , 4. In-The-Canal (ITC) design, Super mini size and light weight, 100% discreet visible, 5.Left/Right ear adjustability, It's easy to adjust the tube to fit your desire. Lift and right, follow yours inclinations, 6. Easy to power off this unit when you sleep or any other times you don't want to use it, 7.Easy volume control for desired level of amplification, You can choose the correct volume which you feel comfortable and clearly, But pls note to adjust volume to the minimum before wearing and then increase volume gradually to avoid sudden increase in sound, 8.Robust construction, 9.Simple and effective to use, 10.More natural, clear sound and great listening comfort 11.Durable, long-lasting hearing instrument inside and out 12.Includes extra earplug pieces and batteries and cleaning brush: there has 4 size earplugs, you can choose the correct size to use and make it comfortable, avoid whistler, also you can use the cleaning brush to clear it if the unit be dirty; 13. Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly, let you enjoy the wonderful world.