Specifications Material Plastic Battery Capacity 300 Battery life up to 16 Voice assistant built-in YES Maximum wireless range <10m NFC Technology no Sound Isolating YES Category Earphones & Headphones Max Output 10mW Number Of Drivers 2 Charging Method cable Magnet Type other Total Harmonic Distortion 1% Impedance Range up to 32 Ω Bluetooth Version other With Microphone Yes Is wireless Yes Support APP No Support Memory Card No Waterproof No Resistance 32Ω Line Length 0m Frequency Response Range 20 - 20000Hz Sensitivity 96dB Active Noise-Cancellation No Volume Control Yes Control Button Yes Vocalism Principle Dynamic Wireless Type bluetooth Communication True Wireless Style In-ear Origin Mainland China Brand Name MONSTER Brand Monster Model Monster Airmars XKT30 Color Green,Beige,Pink Bluetooth Version V5.4 Bluetooth transmission distance About 10M Charging Compartment Capacity 300mAh Applicable models xiaomi,iphone Relevant 1 wireless bluetooth headphones Relevant 2 Wireless bluetooth headset Relevant 3 Cheap things with free shipping Relevant models qcy,kz,QCY,HAYLOU,Lenovo