MD03 Wireless Ear-mounted Bluetooth Earphone with Charging Box & Digital Display, Support Touch & HD Call & Voice Assistant & NFC Features: 1. Bluetooth 5.0 technology, no game delay 2. Bilateral headset HD call; stereo HiFi sound 3. Smart touch, simple operation; can wake up the voice assistant 4. The left and right earphones can be switched between master and slave; take out the earphones from the charging box and automatically connect 5. Use with the charging box, long-lasting battery life 6. LED digital display shows power status 7. Hanging ear design, comfortable to wear 9. Life is waterproof and sweat proof 10. Widely compatible with mobile phonestabletscomputers with Bluetooth Product parameters: 1. Bluetooth version: 5.0 2. Transmission range: 10 meters 3. Two earphones listening time: 3-4 hours 4. Two earphones listening time (used with charging box): 25 hours 5. Charging box battery capacity: 300mAh