Features 1 40mm Speaker Featuring ultra large dynamic units that deliver powerful immersive sound Tuned by ZEALOT s professional acoustics team these headphones enhance sound details and deliver a multi layered audio experience 2 HiFi Surround Sound With a wide frequency range of 20Hz to 20kHz these headphones provide high fidelity audio output capturing intricate details of your music The sound is realistic clear and natural offering a concert like experience 3 Physical Noise Cancelling The full wrapped earmuffs are designed to fit the contours of your ears snugly instantly reducing ambient noise Experience a purer musical enjoyment with effective passive noise cancellation 4 3 5mm AUX Connection Support In addition to wireless connectivity the ZEALOT B39 supports a 3 5mm AUX connection offering you versatile options for connecting to various devices ensuring an uninterrupted audio experience anytime anywhere 5 Long lasting Battery Life Equipped with a robust 250mAh battery these headphones are engineered for extended use ensuring that you stay connected and entertained throughout your day without frequent recharges Specifications GeneralSpecificationBrandZEALOTModelB39ColorBlack BeigeWearing TypeHeadphoneSpeaker40mm 2SNR≥90dBDistortion≤1 Frequency Response20Hz 20kHzbluetoothbluetooth VersionV5 2Supported ProfilesHSP HFP A2DP AVRCPTransmitting Distance10mBattery ChargingBattery Capacity250mAhWork Time6hStandby Time30daysCharging Time2hOther