Drive Unit (diam. in mm) 9.0 Impedance (Ohm) / 1 kHz 16.0 Sensitivity (dB / mW) 97.0

[Great Sound Quality] - High resolution DAC chip that converts standard resolution audio to superior Lossless audio. The light but rigid PVC case keeps sound stable for a richer, more dynamic performance. Especially design for Google Pixel 2/2 XL. [Passive Noise Canceling] - When playing the music no matter in the noisy streets or in the subway and plane, you will not hear these noise, thanks to the sealed silicone In-ear caps. Only the music wrapped in your ear, enjoying wonderful music [ATTENTION: Compatibility] - It ONLY supports mobile phones below: Google Pixel 2, Pixel 2 XL, Google Chromebook, HUAWEI Mate 10 Pro/P20, HTC 10 & U11, Essential PH-1. Other type-c interface devices may not support, or ONLY support music listening such as Motorola Moto z/z force.