Colorful Stereo Bluetooth MP3 Headset Wireless Earphones with Microphone Support SD Card Play 20 Hours

Colorful wireless Bluetooth headset by CATASSU with Bluetooth 5.0 connectivity and semi-open earcups. It features two 40 mm dynamic drivers, support for AAC and SBC codecs, a built-in microphone, detachable cable option and memory card support. Technical highlights include a frequency response of 20–20,000 Hz, 32 Ω impedance and RoHS/FCC certifications.