The Bloody M320 Dual Mode Bluetooth and wired, Hybrid ANC (Active Noise Cancelling) Technology - Extremely lightweight at with 252g. 90deg flat foldable with the enclosed travel pouch for easy portability. - Specifications: Connections: Bluetooth v5.0 / 3.5mm Wired Audio Operating Range: Up to 10m (32 feet) Battery: 500m - Ah Lithium Battery Playtime: 25 Hours(ANC Off) / 15 Hours (ANC On) Driver Size: 40mm Headphone Frequency: 20Hz - 20KHz Headphone Impedance: 32ohm Headphone Sensitivity: 100d - B Microphone Type: Omni-directional (CVC Noise Cancelling) Microphone Frequency: 100Hz - 10KHz Microphone Sensitivity: -42d - B Type-C Charging Cable: 60 cm 3.5mm Audio Cable: 150 cm Weight: 252g Features: Lightweight & Foldable Design Connect up to 2 Bluetooth devices at the same time Voice Assistant integrated 3D protein leather ear pads 40mm graphene Drivers High-Resolution Immersive Sound Bluetooth v5.0 40ms Low Latency