2025 Upgraded Bluetooth 5.4 with 0.1s Ultra-Low LatencyThe Rinsmola G21Pro Bluetooth headphones adds Bluetooth flash pairing technology to the latest Bluetooth version 5.4 for fast pairing in 1 seconds. Compared to the previous version, power consumption is reduced by 40%, signal stability is improved by 60% and interference immunity is increased by 55%. Ensure audio and playback are synchronized for an immersive entertainment experience. After pairing your devices for the first time, your ear buds will automatically connect when you remove them from the charging case. Hi-Fi Stereo CD Grade Audio, ENC Clear CallRinsmola G21Pro Bluetooth earbuds feature 14.2mm graphene drivers and triple-layer composite diaphragm restore the lively, detailed sound (boost bass by 85%), so stereo sounds are crisp, clear, and balanced. ENC noise cancelling wireless earbuds Bluetooth can effectively physically isolate 80% of external noise, ensuring that the other person's voice remains cle