BrandOnePlusManufacturerOnePlus, OnePlus Technology (shenzhen) Ltd, Tai Ran Building C Tai Ran Road, Fu Tian District, Shen Zhen City, China, Tel οΌ86οΌ0755-61882366Product Dimensions37.5 x 11 x 2.5 cm; 26 GramsBatteries1 Lithium ion batteries required. (included)Item part numberE304ASpecial FeaturesNeckbandMounting HardwareBattery packedNumber Of Items5Microphone Form FactorWith microphoneBatteries IncludedYesBatteries RequiredYesBattery Cell CompositionLithium-CobaltConnector TypeBluetoothIncludes Rechargable BatteryYesManufacturerOnePlusCountry of OriginChinaItem Weight26 g