Specifications Hign-concerned Chemical:None Material:Plastic Width[mm]:10 Depth[mm]:10 Weight[g]:50 Height[mm]:10 Battery Capacity[mAh]:300 Battery life up to[hours]:4-6 hours Voice assistant built-in:No Maximum wireless range[m]:10m-20m NFC Technology:No Sound Isolating:Yes Category:Earphones & Headphones Earcups Type:Semi-open Max Output:10mW Number Of Drivers:2 Headphone Pads Material:Silicone Magnet Type:Ferrite Driver Diameter:10mm Total Harmonic Distortion:1% Impedance Range:up to 32 Package List:Charging Cable Features:Waterproof,With microphone,Apple Siri Support Codecs:None,sbc With Microphone:Yes Is wireless:Yes Support APP:Yes Waterproof:Yes Line Length:0m Frequency Response Range:20 - 20000Hz Sensitivity:100dB Plug Type:None Function:for Video Game,Common Headphone,For Mobile Phone,HiFi Headphone,Sport,For Swimming,For Office Active Noise-Cancellation:Yes Volume Control:Yes Control Button:No Vocalism Principle:Dynamic Wireless Type:Bluetooth Connectors:Type c Communication:True wireless Style:Wired in-ear headphones Certification:CE,FCC,RoHS Origin:Mainland China Brand Name:QULE Resistance:30 Support Memory Card:No wireless earphones:wireless earphones bluetooth earphones:bluetooth earphones wireless headset:wireless headset