Sensored motor capable Additional settings and software updates available via Windows based Castle Link software and USB adapter or the Castle Link App for Android or iOS and a B-LINK bluetooth adapter Convenient transmitter programming for six common adjustable settings Telemetry ready Auxiliary wire functionality allows for “on the fly” adjustments such a Max Power and Max Brake Audible alerts that will notify you of possible issues with calibrations and error conditions. External 10-amp CC BEC Included. Operating Environment: Waterproof design allows for use in nearly any environment Brake: Proportional Reversible: Yes, but may be disabled On/Off Switch: Yes, waterproof Cooling Fan: Not included Size (L x W x H): 41.6 mm x 29.4 mm x 21.3 mm 1.64″ x 1.16″ x. 84 Weight (with wires): 1.66 oz / 47 grams Connectors: 3.5 mm bullets. Input Voltage Range: 2S-3S LiPo, 4-9 cell NiMH Kv: 5300 Max. RPM: N/A Size: Length: 1.5″ (38mm) Diameter: 0.79″ (20mm) Weight (w/wires): 1.8 oz. Shop everything you need for your hobbies at Mark Twain Hobby Center! We are sure we can work out any issues that might come up. Thank you in advance for your feedback! We do not mark merchandise values below value or mark items as “gifts”, US and International government regulations prohibit such behavior.