Specifications: Brand OKSJ Model CS05 Color Black Wearing Type Bone Conduction Net Weight (g) 31g Microphone Yes Volume Control Yes bluetooth Version V5.3 Supported Profiles HSP/HFP/A2DP/AVRCP Transmission Distance 33feet (10m) Frequency Response 20-20k Hz Battery Capacity 150mAH Charging Time (h) 1-2h MusicTime 5-8h Waterproof IPX8 PackageIncluded: 1*OKSJ CS05 bluetooth V5.3 Earbuds 1* Charging Cable