Single speaker with D shape earhook.
1.Soft rubber ear loop with speaker.
2.Rotating speaker which alleviatespull pressure from the cord.
3.Adjusts to fit either the left or right ear.
4.Listen only device.

Speaker:
Speaker size:23mm
Sound pressure level:102dB±3dB
Impedance:32 Ω ±15%
Audio output:100mW