1、210K Erpm: The RC ESC supports brushless motors up to 210K erpm. Start up acceleration can be set, accelerator response is fast 2、Built in BEC: The brushless ESC has a very glossy linearity of speed regulation, suitable for various model boats. Built in BEC, with steering gear, high load power and low power consumption 3、Protection Function: The 2 way ESC has low voltage protection, over temperature protection, throttle signal loss protection, stall protection, etc. The motor will not start immediately when the power is turned on, no matter where the remote control throttle is at any position 4、Support Settings: The ESC can automatically identify the number of battery cells, the low voltage protection threshold can be set, cycle menu settings, and compatible with all remote control operation settings and support programming card settings 5、Glue Filling Waterproof: The ESC is glue filling and waterproof, and supports short term immersion work (please dry it before use after immersion in water to avoid product damage). With aluminum alloy water cooling system Item Type: RC ESC Material: Aluminum Alloy, Electronic Components Colour: Black Continuous Current: 120A Maximum Current: 130A BEC Model: Switch BEC BEC Output: 5.5V 5A Support Battery: 2 to 6S (lithium battery) Applicable To: Drive Various 3 Phase Brushless Motors on the Market, Especially Suitable for RC Boats and Airship Models 1 x RC ESC 2 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin