REMAX Brand RM-S1 In-ear Sport Hanging Earphone Headset With Mic - Black

Specification: Brand Name: REMAX Model Number: RM-S1 Optional Color: Green, Orange, Black, Blue. Drive: Quad-core Impedance: 32 +-10% Frequency response range: 18HZ-23KHZ Sensitivity: 88+-3dB Rated Ou