Upgraded Bluetooth 5.1 chip, the connection is more stable and the delay is lower, and it supports Bluetooth devices Support ACC/SBC HD audio decoding 13mm dual-frequency large moving coil unit, composite dual-diaphragm, high-frequency analysis True TWS, regardless of main and auxiliary ears, free switching between ears, can be used alone Take it out and connect, pair in seconds, and pair automatically after the first pairing Long battery life, 3-4 hours in a single use, and the charging compartment can be used 4 times Adopt Type-c interface, fast charging, charging compartment magnetic design