Product name:Universal Drone Loudspeaker 3 Kilometers Sound Transmission Voice Amplifier Compatible for Dji Mavic 3 Pro/Air 3 Drones Long-Distance Transmission: Stable sound quality, long-distance amplification, anti squealing design, no magnetic worryUniversal Accessories: 3 kilometers ultra far transmission, Universal Drone Accessories, compatible for DJI Mini series, Air series, Mavic series drones. Material: Applicable to most mainstream drones. ABS wear resistant material. Long life of large capacity lithium battery Powerful Sound: Through powerful built-in voice decoding chip, high fidelity, no impact on flight. Applicable Scene: High power speaker, full use of various scenarios such as event holding, anti epidemic propaganda, crowd evacuation, danger warning, etc. . Description: Name: Drone Speaker Megaphone Suitable for Drones Universal loudspeaker intercom Suitable for a wide range of models, compatible for Mini series, Air series, Mavic series Drone Size: Speaker: 112x88x37MM; Intercom: 162x52x24MM Weight: Loudspeaker 97g; Walkie-talkie 62g Material: ABS Color: Black Packing list: Megaphone x 1 walkie-talkie x 1 charging cable x 1 fixed frame x 1 hand screw x 1 large silicone ring x 1 small silicone ring x 1 instruction manual x 1