Features 1. Automatic Bluetooth Connection.  Automatic connect to your phone Bluetooth once you pick up your earbuds from the box.  Automatic cut off the Bluetooth and charge once you put them back to the charger box.  2. Intelligent control.  Longpress for 1s to hang the call & Press once to answer.  Short press three times for volume adjustment.  Short press twice for prev/next song.  Press once to pause/play the music.  Long press 2s to call for siri.  3. 3500mah large capacity charging box, with LED digital display, also can be a power bank.  4. Waterproof Design.  5. The charging box can be a phone holder/stand, for convenient use when you watch video.  6. Portable size, easy to carry in the pocket.  7. 8D surround stereo sound effect.  8. Ergonomic design. Comfortable and light-weight.  9. Soft and comfortable rubber earbuds.  10. Supports single earbud connection and double earbuds connection. One pair of earbuds can connect two devices.     Specification 1. Name: Wireless earbuds;  2. Model: D82771;  3. Color: White/Black;  4. Material: ABS;  5. Bluetooth version: BT5.0;  6. Supports HSP1.7/HSO1.2/A2DP1/AVRCP1.6/SPP1.2/PBAP1.0;  7. Earbuds battery capacity: 60mah;  8. Charging Box capacity: 3500mah;  9. Calling Time: 4-5h;  10. Music Playing Time: 4-5h;  11. Charging Time: 1-2h;  12. Input: 5V 1.5A;  13. Output: 5V 200mAh;  14. Temperature: -10℃~55℃;  15. USB Cable Length: 20cm;  Package Include: 1 Pair x Earbuds;  3 Pair x Rubber Earbuds Cover;  1 x Charging Box;  1 x Charging Cable;  1 x User Manual