Wireless Bluetooth Earphones 558 with Earloop, Sports Headset, Gaming Handsfree for All Smartphones

558 earphones tuned for sports and gaming pair two 10 mm drivers with a semi-open design for a balanced soundstage. The response covers 20–22,000 Hz, total harmonic distortion is 1% and sensitivity is 125 dB at 32 Ω impedance. The cable measures about 23.6 in and the ear-hook shape keeps the earbuds secure during activity. Controls include volume adjustment, a control button and a built-in microphone, and the set offers active noise cancelling.