2. 10
channel WDRC Processing
3.
Pre-setting Programs
4.
Feedback Cancellation
5.
Low Battery Warning Indicator
6.
Thin Tube Changeable
7.
S/M/L Closed/Open Dome Size
8. Battery Open Fit
9. Open fit
Thin Tube Design
10.
12 Bands Frenquency Shaping
11.
Rocker for Volume/programs
12.
Noise Reduction
13.
Program Switch Indicator ON/OFF With Battery Door
14.
Casing Color Optional
15.
Bluetooth phone APP Optional