Bluetooth headset thermos cup

▸ Chip configuration: large dynamic speaker | DEAA Directional Sound Transmission | Dual-microphone noise cancellation
▸ Connection performance: Bluetooth 5.3 | IPX4 waterproof | 120 hours standby
▸ Structural design: over-ear wear | 316 stainless steel liner | 0.4kg net weight
▸ Capacity: 500ml water cup | Built-in tea drain structure
▸ Audio Technology: 360° Surround Sound | FlashLink 6.0 transmission