M19 Noise Reduction With Charging Bin Bluetooth Earphone 1. Noise cancing version: CVC8. 02. Battery capacity: 40mAh for earphone, 2200mAh for charging compartment 3. Bluetooth version: 5. 24. Connection distance: about 10m 5. Speaker specifications: 10mm 6. Features: music play / pause, caller announcement, CVC HD noise reduction calls, power display, voice prompts 7. Packing list: charging compartment x 1, earphone x 2, data cable x 1, manual x 1Features: 1. design, comfortable fit, firm wear 2. AI wisdom screen, LED digital display, clearly display the charging compartment and the power of the left and right headphones 3. Eight-core loud speaker sound, three frequency , stereo surround sound 4. Charging compartment can be used as a phone stand, support horizontal and vertical placement 5. CVC8.0 intligent noise reduction technology, intligent noise filtering, clear calls 6. With mobile power function, can be charged to the phone 7. Built-in button pan, convenient operation 8. Mini body, easy to carry