1000m lossless transmission: 1000m ultra-long distance transmission, using wireless frequency band, strong penetration 120 decibels: built-in voice decoding chip, up to 120 decibels long-distance transmission, loud and clear voice Strong battery life of 120 minutes: built-in 5V500mAh large-capacity lithium battery; can shout continuously for 120 minutes, fast charging, full in 30 minutes Firm and stable flight without shaking: the arc is close to the fuselage, tight and firm, and enhances the stability between the loudspeaker and the drone Easy installation with one click and one buckle: convenient installation, simplified steps Name:Drone Speaker Applicable to more models:for 3/ 3 Pro/ Air 3/ Mini 4 Pro/ Mini 3 Pro/ Mini 3/ 2/ Pro/ UAV/ RC quad-rotor drone and multi-rotor drone, suitable for drones with a load weight of more than 70g Colour:Black Material:ABS+PC Package Contents: 1 * 1 * Walkie-talkies 1 * Charging Cable 1 * Short Strap 1 * Long Strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.