Material : Plastic Weight[g] : 52 Battery Capacity[mAh] : 30 Voice assistant built-in : YES Maximum wireless range[m] : 10m-20m NFC Technology : no Sound Isolating : YES Category : Earphones & Headpho more→nes Earcups Type : Semi-open Max Output : 50mW Number Of Drivers : 2 Charging Method : Charging case Headphone Pads Material : Other Magnet Type : Neodymium Driver Diameter : 10mm Total Harmonic Distortion : 0.02% Impedance Range : up to 32 Ω Bluetooth Version : 5.3 Package List : User Manual,Charging case,Charging Cable Features : waterproof,With Microphone,Amazon Alexa Support,Apple Siri Support,Playback Control,Google Assistant Support Codecs : AAC,Apt-X,sbc With Microphone : Yes Is