Redmi airdots features 1. Automatic second connection. 2. Bluetooth 5.0, the connection is more stable. 3. 12h long battery life, with charging box. 4. Double-ear multifunction button, anti-missing. 5. Summon voice assistant, voice control a mobile phone. 6. Comfortable to wear, self-adjusting, not easy to fall off. 7. Ipx4 waterproof, no fear of rain and sweat. Redmi airdots specifications brand – xiaomi redmi airdots material – abs bluetooth version – v5.0 transmission distance – 10m bluetooth protocol – hfp/a2dp/ hsp/avrcp frequency response – 20-20khz battery capacity – charging box: 300mah, 3.7v / earphone: 40mah, 3.7v charging time (h) – 1.5-2h working time (h) – 12h standby time (h) – 150h