Comfy and Secure Fit: Adjustable & secure-fit earhooksExcellent noise cancelling technology for high sound quality.<br>Ergonomic design, fit perfectly for most people ears.<br>nd you can use two to pursue perfecter music sounds.<br>Each earpiece can be used alone or together.<br>Clear high and low volume. Best wireless earbuds sound keep the earbuds in place when moving or working out, soft ear tips and ergonomic design offers comfortable wearing experience. Equipped with 3 pairs of spare ear caps (L/M/S) for your choice to get the most suitable fitting.