KZ-VXS Ten-Unit Coil Iron Stereo In-Ear Sports Bluetooth Earphones(Obsidian Black)

1. One circle of four irons on one side, independent frequency division circuit and external DSP sound effect blessing.2. Smart touch, no need for mobile phone operation.3. Ergonomic design, light and comfortable.4. Bluetooth version: 5.25. Bluetooth range: 15m6. Headphone running time: about 4 hours7. Headphone battery capacity: 35mAh8. Charging compartment battery capacity: 400mAh9. Standby time of charging compartment: greater than or equal to 20 hours