Mini portable charger box for charging and storage, smaller and more portable Freely switch between master and slave headphones, smart and simple, enjoy wireless There is no difference between the primary and secondary earplugs, switch immediately, there is no need to reconnect when you put back the right ear or left earplug 500mAH large capacity battery, a single headset can be used 14 times. Automatically paired when removed from the charger box, and automatically closed when placed in the charger box, free to use Bluetooth 5.0, stable and strong signal, double transmission without delay. 6mm dynamic speaker, 6D vibrating stereo, adding power to your song list Imported MEMS microphone, lossless noise reduction, bilateral stereo high-definition filter call. Can be split into two separate earphones for separate use, or can be used in combination with two earphones 10. Store and charge together, take out and turn on automatically, shut down automatically Remove the charging box, the headset will automatically connect, put in the charging box, the headset will automatically disconnect and charge Double-click the multi-function call SIRI or Xiaoai or YOYO, etc. Compatible with IOS/Android