1)Frequency range: 20Hz to 20kHz
2)Sound pressure level: 107dB+-3dB/100mW
3)Total harmonic distortion: <=5(input power: 10mW; Frequency range: 20Hz to 20kHz)
4)Available in various colors and designs to meet customer needs
5)The new packing is compact size and nice looking, and the silver-plated insert paper gives prominence to the product
6)The handsfree use soft and environmental protection wire instead of the common wire, and the soft silicone rubber in-ear cushion of handsfree is comfortable and convenient to use
7)Crystal clear and high quality voice for both talking party, noise cancellation, and high-velocity element for excellent stereo effect