Bluedio R2-WH Wired Headphones (Black) 1.Bluedio 8 driver units creates 8 tracks Headphones :2 pieces of 50mm 50 woofer and 6 pieces 32 3D speakers composed of 8 driver units, represent strong bass and clear sound quality and revert original music to you. 2.High fidelity monitoring headphones:R2-WH strive to transmit high fidelity music, without DSP, sound source playing through the speaker directly, 0.2% THD only, revert to most original Hi-Fi music no matter play on FLAC, WAV or APE format, suitable for professional user. 3.Wide range frequency response:Independent bass and tweeter speakers of Bluedio R2-WH composed to 5Hz-25kHz wide range frequency response, speaker sensitivity up to 114dB, created wide range frequency response. 4.Exposure to the scene by PPS8 effect:The unique PPS8 effect of Bluedio, to simulate 5.1 channels surround sound effect, no matter listening to music or watching movie, PPS8 will present you to the true scene. 5.Accessories made for you:An audio cable with calling function made for Apple and Samsung devices, you wont miss any important call while enjoying music. Thus, there is a extension cable for computer, let you use R2-WH to make IP call and video chat easily.Convenience: With adjustable and foldable slider of Bluedio R2-WH, plus light weighted, it is easy to bring.