Dareu D1 White comes with BlueTooth 5.1 connection. This Earbuds is Waterproof: IPX-4, You don’t need to worry about sweat or rain affecting the product function. The single ear weight only 3 grams. Realizing the real wear it without feeling. After the initial connection, open the cover each time it is used to automatically pair. This Earbud featured with BlueTooth protocol: HFP/ A2DP/ AVRCP, Working distance: ＜10m, Working time: 3h talk time; 4~5h music time, Charging time (earbuds or case): appr. 1.5hr, Working time up to 3 hours for talking and 4~5 hours for music. 400mAh charging case provides approximately 3 charging times. Working time can be up to 3 hours for talking and 4~5 hours for music. 400mAh charging case provides approximately 3 charging times. It is compatible with iOS/ Android. The latest Dareu D1 White TWS Earbud has 6 Months Official Warranty.