1. Speaker: 40mm.2. Interface: 3.5 plug.3. Microphone: unidirectional microphone, Φ6.0*2.2mm.4. Sizes: 188*180*90mm. Headphone cable length: 1.2m.5. Weight: 184g.6. Wire control: volume adjustment, microphone switch.7. Equipped with 3.5 plug.