Products Name:Dual Dynamic Four Speakers 4D Subwoofer Surround Bluetooth HeadsetThere are 4 graphene speakers, each of which can be used for a different frequency band, finally creating an excellent stereo Bluetooth wireless earbuds, bringing you a high-fidelity music experience.Highlights:Dual-unit four-speaker high and low frequency crossover matchingGraphene diaphragm has strong resonanceThe new Bluetooth 5.0 is faster and more stableThe dual host chip is connected at any timeFully compatible with Apple and Android systemFingerprint touch design300mAh capacity charging compartment, 4-5h continuous playbackFull Specifications:Color: blackProduct Type: TWS True Wireless Bluetooth HeadsetChannel: dual stereo channelTransmission distance: 10 metersBluetooth version: Bluetooth V5.0Speaker unit: 6mmSupport decoding format: HFP, HSP, A2DP, AVRCPSpeaker impedance: 32Speaker frequency response: 50HZ-20KHZStandby time: about 120 hoursPackage Content:1x One pair of earphone1x Cable1x User manual