Bluetooth connection, stable and fast. 5.0 chip, 10 meters transmission distance, widely compatible with Apple, Android, PAD, notebook and other equipment. All-inclusive ear design, soft protein skin, good head beam resilience for comfortable wear. 40mm moving coil unit with delicate sound, high fidelity sound, enjoy the original sound. 1 hours fast charging, 20 hours of listening, 360 hours Standby.