HG P408 1/10 Engine Sound System +Horn Speaker RC Car Spare Parts HG-RX1017 Bird When the BEC of the

When the BEC of the ESC(of helicopter/airplane) does not work

Over-charge and discharge protection

Max power: 754

2V)as power supply or use adapters with at least 2A battery output

HG P408 1/10 Engine Sound System +Horn Speaker RC Car Spare Parts HG-RX1017 Bird When the BEC of theDescription: Item Brand: HG Item Number: HG RX1017 Item Name: Engine Sound System +Horn Speaker Material: Plastic and metal Color: As the picture shown Product Size: Horn: 70*44. 5*24mm Product Weight: 60g Packaging Weight: 81g Fit For: HG p408 1 10 rc car,other hg cars cannot use Package included: 1X Engine Sound System 1X Horn Speaker 1X Paper Manual Sheet