A51 USB Charging Wireless Bluetooth HIFI Stereo Headset with Mic(Pink) Filter-Fiber Receiver It is used as power

It is used as power supply for USB 2

One Package Size 24cm * 12cm * 12cm / 9

Microphone sensitivity: -38+/-1dB

Carton Size 49cm * 47cm * 40cm / 19

Product weight: about 80g

A51 USB Charging Wireless Bluetooth HIFI Stereo Headset with Mic(Pink) Filter-Fiber Receiver It is used as powerFeature: 1. Dynamic unit design, good audio analysis, no distortion of details, excellent immersive listening experience. 2. Choose professional internal magnetic speakers, add a bass diaphragm at the bottom, full bass, bright high sound, it will make you addicted to listening at once. 3. With a rigid, soft and thin composite diaphragm, it creates a rich and spacious auditory effect, and enjoys the presence of deep bass, clear midrange, and loud