Portable Foldable Wireless Headphones White

Bluetooth Version: 4.0Vocalism Principle: DynamicVolume Control: YesSupport Memory Card: YesWith Microphone: YesResistance: 32 ΩFrequency Response Range: 20-20000HzSensitivity: 70 dBWaterproof: NoCharging Time: 2-3 hoursWorking Time: 6 hoursStandby Time: 250 hoursSize: 17 x 17 cm / 6.69 x 6.69 inchPackage Includes:1 x Headphones1 x USB Cable1 x User’s Manual