Features: – Wireless earbuds with LED display make it obvious to show the battery power of the case and ear buds. – Bluetooth earbuds adopt bluetooth chip technology, which can offer a clear and smooth connection, allowing you to hear crystal clear calls like you are communicating face to face with others. Don’t worry about interruptions on listing to music and calling. – Compared with touch control, button control is easy so that you can obviate any operations and don’t need to remember its instruction. When you pick wireless earphones out of the charging case, they’ll automatically connect to the paired previous device. – Sport headphones to keep you motivated, a secure fit that won’t shift or fall out during long hours of training, and no wires to hold you back. Equipped with 3 pairs of ear caps and flexible earhooks, which can stay on your ears and get a suitable fitting. So that you will not feel tired and pain when wearing it for a long time. – Bluetooth earphones can fit for camping, running, or working out, even on a rainy day. Specification: Connection: Bt connection Earbuds Battery Capacity: 50mAh Charging Case Battery Capacity: 3500mAh Bt Version: 5.0+EDR Bluetooth Protocol: HFP/HSP/A2DP/AVRCP Charging Time: About 1-2 hours Playing time: 3-4 hrs Color: Black Transmission Distance: 10m Connection Method: single/double free to use Function: Music play/pause, call answering noise reduction, IOS power display, voice prompt.