In-ear wireless headphones $ 7.92 Operating range: 10 meters Size: 40 * 25 * 32mm Playing time: 10 hours Frequency response: 80Hz -20KHz Speaker output power: 10mW Signal to noise ratio: 80bB Function: answer / end / reject / transfer / call waiting, redial, mute, volume adjustment, multi-point connection, listen to music pause / play, Noise reduction, up and down switch
