European And American Outdoor Wireless Headset Knitted Hat Multifunctional Music Hat

Product information:Category: knitted hatMaterial: OtherStyle: European and AmericanWeaving method: plain weaveProcessing method: OtherPopular elements: bare bodyPattern: MonochromeHat top style: domeHat style: no eavesColor: red, black and grayBluetooth parameter information:Frequency range: 20-20KHZSensitivity: 95DMTransmission distance: 10MImpedance: 32 ohmSpeaker size: 30MMCharging time: 2HStandby time: 24HListening and talking time: 10HBattery: 180mA polymer lithium batteryAccessories: data cable + manualSize Information:Size: Free size unit:cmNote:1. Asian sizes are 1 to 2 sizes smaller than European and American people. Choose the larger size if your size between two sizes. Please allow 2-3cm differences due to manual measurement.2. Please check the size chart carefully before you buy the item, if you don't know how to choose size, please contact our customer service.3.As you know, the different computers display colors differently, the color of the actual item may vary slightly