Features: 1. Mini and Ultra Lightweight in-ear design guarantees stability and comfortable.  The sealed shell can easily repel sweat and rain, Ideals for workout, running, hiking, biking, gym, doing yoga, travelling etc. 2. Small and sleek design make the charging case slides effortlessly into any pocket or bag. 3. Superb listening experience with powerful bass and exceptional detail. Get an unrivaled Sound Quality & Call Clarity. 4. Pick up 2 headsets from charging case and they will connect each other automatically, then only one step easily enter mobile phone Bluetooth-compatible setting to pair the earbuds. 5. Tap any earphone to answer the call and switch between the upper and lower songs. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Size: 9.5*3.5*12CM Battery capacity:250mAh for charging case/30mAh for headphones Battery voltage:3.7V Transmission distance:10M Input voltage:3.7/500MAH Frequency:2402MHz-2480MHz Charging current:60MA Speaker:F10 Single set weight:80g Package List: 1 set x Wireless Earbuds