Product Description FEATURES: Mini body design Ultralight, feel nothing when wearing \\\\ Ergonomic in-ear design, hard to fall out IPX4 waterproof, enjoy sports as much as you like One-button multi-operation function Magnetic pogo pin charging, safe and convenient MEMS silicone microphone, strong stability, and great noise reduction bring you a clear conversation 7.2mm strong magnet moving coil unit, make the voice and drumbeat more powerful Bluetooth 4.1, compatible with the 4G network, CSR 8610 chip, improve compatibility, stability and functionality