Product Name: Bluetooth HeadphoneProduct color: Black,Gray,Dark Gray,A-RMY GreenMaterial:ABSGross weight: 0.73lbs/0.334kgProduct size: 19x18x7.5cm /7.48x7.08x2.95inchPackage size: 16.8x16.8x8.8cm/6.61x6.61x3.46inchBattery capacity: 400mAh with protective plateCharging time: 1-2 hours (5C/1A)Play time: 16 hours at medium volumeBluetooth version: V5.0+EDRFrequency response: 20Hz-20KHzOutput power: 40mWSignal to noise ratio: 85dBDistortion rate: 1%Impedance: 32ΩTransmission distance: 10-15m without obstacles 9D surround sound, as if in the atmosphere of multiple audio playback 360 degree music surround, fully immersed in their own music world, headset wireless Bluetooth headphones, High sound quality, soft and comfortable to wearShock subwoofer, enjoy music, driver unit, Bluetooth transmission, ear cushion design, from the inside out to enhance the details of the impact of subwoofer soundHIFI stereo sound, all-round D-ynamic sounds field to create powerful stereo sound, to create a sense of immersionPowerful steel magnetic speakers with built-in powerful steel magnetic speaker drivers for D-ynamic bass and clear highs, simulating live sound and restoring realistic soundEquipped with Bluetooth 5.0 chip, intelligent noise reduction, lower loss, more stable connection and faster transmissionHigh-definition voice calls, CVC HD microphone, removes ambient noise and recognises and capture voices, ensuring high reproduction calls, no matter where you are, voice calls are like face-to-face communication