Technical SpecificationSpecification V5.0 with QCC3020 Chipset profile A2DP.HFP.HSP.AVRCP.SPP Liquipel IPX7 Waterproof Rating Noice Reduction CVC8.0Transmission Distance 4050 ft without obstacles Battery Lithiumion 100 mAh Charging Port TypeC Charging Time 1 Hour Playback Time up to 8 Hours Charging Box Playback Time up to 50 HoursPackage IncludesV9 Earbuds TypeC Charging Cable 3 Pairs Interchangeable Earphone CapsSmall, Medium, Large User ManualCare and MaintenanceKeep the headset away from hot areas. High temperatures will shorten lifespan of the headset and battery. Power off the headset when not in use and before storing. Do not try to take the product apart. Do not drop or knock your headset on hard surfaces. Do not use chemicals or detergents to clean the product. Do not scrape the surface with sharp objects.