Castle Creations is thrilled to add a performance upgrade solution to the ever-growing micro-scale phenomenon in R/C. The SIDEWINDER NANO may be small in stature, but it's colossal in power and includes their proprietary CRYO-DRIVE Technology resulting in improved thermal performance during partial throttle operation where the majority of driving occurs. The Sidewinder Nano is ready-to-run out of the box but can also be "tuned" for the drivers' preferences using a Windows based PC and a Castle Link USB adapter (sold separately), or with a mobile device using Castle B-Link Bluetooth Adapter (sold separately).PRODUCT APPLICATIONS:Ideal for 1/24th scale 2WD or 4WD vehicles up to 1lbs Vehicle examples: Axial SCX24, Axial AX24, Element Enduro24, FMS FCX24 1/18th crawlers up 2.25lbs (no rock racing/hill climbing) Vehicle Examples: Axial UTB18, Traxxas TRX-4m, FMS FCX18Includes:Sidewinder Nano ESCESC Quick Start GuideRequired to Complete:Battery and Motor Connectors sold seperatelyFeatures:Input Voltage Range 2s-3s LiPo, 12.6V MaxSensorless and Brushed Running ModesInternal BEC 5V Fixed, 5A PeakCRYO-DRIVE Technology minimizes the amount of time the ESC's electrical components spend generating heat, resulting in improved thermal performance during partial throttle operation where the majority of driving occursCastle Link tuning via Windows PC and a Castle Link USB adapter (sold separately)Convenient TRANSMITTER PROGRAMMING for six common adjustable settings including cutoff voltage and drag brakeOptional smartphone-based programming with the B-LINK Bluetooth Adapter (sold separately) and Castle Link app available on Google Play or Apple App StoreAudible alerts for easy diagnoses of common issues such as low-voltage cutoffProudly designed and supported in Kansas, USA.Backed by Castle Creations' 1-YEAR WARRANTYSpecifications:Input Voltage Range: MIN: 2s LiPo MAX: 3s LiPo 12.6VBEC Specifications: 5V fixed output, 5A PeakOperating Environment: Not waterproof, silicone