Features:Support face recognition: take off the earphone and automatically pause ( supported by the right earphone )Stylish appearance, ultra-small size Fit your ear perfectly for comfortable wearingWith charging box for long duration Clear talking and premium sound quality Specifications:Specification Brand Bluedio Color Black Wearing Type In-ear Dimensions 67.5*60*37mmTechnical Parameters Microphone Yes bluetooth Version V5.0 Transmission Distance 10m Rated Power 7mW+ 7mW Impedance 32 Frequency Response 20-20kHz Battery Capacity Charging box: 600mAh, 3.7V Charging Time (h) 1-2h Working Time (h) 5-6h Standby Time (h) 1000hPackage Included:Bluedio Hi TWS Wireless bluetooth 5.0 Earphone HiFi Stereo Intelligent Induction Bilateral Call Headphone with Charging Box 1* Bluedio Hi TWS Wireless bluetooth 5.0 Earphone with Charging Box 1* USB Charging Cable 2 pairs of eartips 1* Manual