oraimo Riff 2 Half-in-Ear True Wireless Earbuds Product Parameters: Bluetooth version：V5.3 Battery Playtime: Up to 6 hours playtime on single charge; case provides additional 24 hours playtime Driver Size：12mm Ear Factor: Half-in-ear Transmission distance：10m Material：PC ABS Charge Input: Type-C Color：Deep Blue Model:OEB-E04D