Feature: 1. Complete structure small size light and portable easy to install and low air resistance suitable for most toy drone. 2. Flexible expansion which can fix all kinds of vehicles such as aircraft and toy car. 3. Stable and adjustable hook & loop. Easy adjustment avoid scratching vehicle when sticking. 4. Built‑in magnetic speaker does not affect the geomagnetic field of the drone hi‑fi intelligent digital function independent communication. 5. Widely applications suitable for Mavic series drone for spark series etc. Specification: Condition: 100% Brand New Item Type: Drone Speaker Material: ABS Color: Black Loudspeaker Battery: 3.7V-220mah (built-in lithium battery) Remote Control Battery: 3.7 V-300mah (built-in lithium battery) Remote Control Frequency: 462.6875MHz Remote Control Distance: About 100 meters Usage Time: About 2 hours Loudspeaker Charging Time: About 30 minutes Remote Control Charging Time: About 30 minutes Charging Mode: USB (5V/1A) Loudspeaker Size: Approx. 5 x 5 x 2.8cm / 2 x 2 x 1.1in Remote Control Size: Approx. 15.3 x 5 x 2cm / 6 x 2 x 0.8in Suitable Age: 14+ Fitment: Fit for DJI Fit for Mavic series Fit for Spark series Fit for SMRC ICAT3 ICAT2 ICAT6 Q3 Fit for F11 Fit for MJX B4 Fit for LYZ L109 Fit for SG906 Fit for ZEN K1 Fit for JJRC X11 x12 X3 X5 X9 Fit for ZINO Fit for FIMIx8 Fit for X1S and other drones capable of carrying more than 100g as well as other remote control vehicles. Package List: 1 x Sound Transmitter 1 x Loudspeaker 2 x Strap 1 x Spare Strap 1 x Manual 1 x Charging Cable Note: 1. Delivery does not include drone. 2. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.