Lullies Ear Plugs (Turquoise) Noise Cancelling Reusable Earplugs for Sleeping BEC output voltage(5~6V) to show great performance on the torque & speed of servo. Three programmable throttle speed settings to support quick throttle response. Govener Mode(governor speed controllerslow down system). Small and compact PCB design for ease of installation. High compatibility to work with 98% brushless motors in the market.