明友起重
MingYou Crane HandlingChipset:JL 5.0 Rotating Earmuffs. Bluetooth: V.5.0 Noise cancellation: 18-20db Long working time: 27hours (ANC),13hours (Bluetooth),9hours (Bluetooth+ANC) Stainless Steel Headbands. Support: HFP,HSP,A2DP,AVRCP,SBC Operating distance:≥10m Working voltage: 3.7v Maximum input power: 500mW Maximum output power: 90mW Noise cancellation: 18-20db Effective bandwidth for noise cancelling : 50-1000hz Battery capacity: 400mAh Charging time: 2h Unit diameter: 40mm Impedance: 32 ohms Frequency response: 20-20khzSensitivity: 115dB Net weight: 278g