OKCSC DD4 Dynamic Hybrid Earphones Bluetooth In Ear Earbud Headphones HIFI Stereo MMCX Re-cable Built-in Microphone V4.1 (Blue) Review

Balanced armature type and dynamic type hybrid driver installed!
Designed based on the internal structure of the ear, comfortably fits perfectly.
It is a reliable long-lasting battery that combines adequate battery performance for applications such as continuous talk time of about 8 to 10 hours, going to commuting to school.
Using the latest Bluetooth 4.1 version, you can connect to Bluetooth compatible music devices such as smartphones, tablets etc. more easily and quickly.
I come with 3 size earpieces. Attaching an earpiece of appropriate size improves the fit to the ear.