Silicone Horn Stand Speaker compatible with Apple iPhone 4 / 4S, Black

Perfect for turning your iPhone 4 into a speakerphone.
No external power needed.
13db amplified. Easily keep iPhone stands vertically and horizontally.
Functions well in hand free mode.
Additional opening reserved for charger.
Bugle loudspeakerUsing the principle of the bugle concentrating the voice and direct the conduction direction in order to reach the effect of increasing the volume it can increase 13 db after use and does not need any supplementary electricity it is absolutely environmental friendly saves energy and reduces emission.