●Since it sends "speaker sound" to eardrum with reflection sound, even if it uses for a long time, burden on eardrum is reduced.
Based on original mechanism, the sound quality of headphone is reproduced even though it's a conventional earphone.You feel a spreading sound and sensation as if you are in music hall.

●With Remote control and microphone Telephone call with iPhone & Play/Pause/FF/REW with music player can be available.
*Operability confirmed: iPhone's microphone

Since speaker unit is set as opposite direction unlike the original direction, reflection sound is conveyed to eardrum. Burden on eardrum is reduced, because sounds do not convey to eardrum directly. You can see that Low frequency & High frequency are better than general speaker from the graph. The difference makes presence as if using headphone.

・Model number :GD-1202EMR
・Type : The reflection sound speaker
・Noemal input/Maximum input : 1mW/3mW
・Impedance : 32Ω±15%
・Sound pressure : 100±3dB
・Standard frequency : 20〜20,000Hz
・Cord length/plug/weight : 100±5mm/Φ3.5/10g