M81 CVC Noise Reduction Unilateral Business Ear-mounted Bluetooth Earphone, Support Siri & One for Two(Black)

Features: 1. Bluetooth 5.2, low power consumption, fast connection speed, stable and continuous connection without lag 2. High-definition noise reduction, clear call 3. Support to connect two devices at the same time, can switch at any time 4. Multi-function buttons, simple operation, support for calling Siri, adjusting the volume and other functions 5. Wear it for a long time without pain, stable without falling Product specifications: 1. Bluetooth version: V5.2 2. Battery capacity: 300mAh with protection version 3. Listening time: 28 hours 4. Standby time: 720 hours 5. Charging time: about 2 hours 6. Bluetooth distance: 15m (under obstacles) 7. Headphone size: 67x24x17mm