Shure SE535-V BT2, Dynamic In-Ear Earphones, With RMCE-BT2 Bluetooth cable with remote control and microphone, 2-Way earphones, 3 Drivers (1x tweeter, 2x woofer), In-ear, Impedance: 36 ohms, Frequency range: 18-19000 Hz, Sensitivity: 119 dB SPL / mW, Detachable cable rotatable through 360°, Matching replacement ear sleeves (not included): EABKF1 and EASFX1, Colour: bronze, Includes USB cable for connection to a charger, various ear tips and storage case