A50 Bass Stereo Wireless Bluetooth HIFI Headset with Mic Feature: 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 treble； 4. The ear shell is designed with a 15° tilt, the arm can be stretched in a large size, and it is equipped with soft leather earmuffs, which is skin-friendly, breathable and not stuffy, providing a comfortable wearing experience； 5. 40mm dynamic coil unit, with strong bass explosive power, such as clear and realistic sound quality and deep bass at the scene, presenting you with a different listening experience； 6. Fall in love with the dynamic and crystal-clear treble and the crisp and deep bass line, adding features to any song. Specification: 1. Bluetooth: 5.0+EDR 2. Range: 10 meters 3. Speaker: 40mm Inside magnetic trumpet 4. Battery: 300mAh 5. Working time: up to 6 hours 6. Standby time: up to 20 hours 7. Box Size: 18x18.5x5.8cm 8. Net Weight：0.13kg 9. Gross Weight: 0.242kg Packing list： Bluetooth Headset x 1 User manual x 1 Type-C cable x 1