This is Hobbywing Xerun XR10 Pro 1S HD 1/12 Sensored Brushless ESC.
Features:
- Word's Champion's choice, ROAR APPROVED
 - Redesigned new architecture platform
 - 40% smaller in volume* (*6mm shorter, 6mm smaller in width)
 - 24% lighter in weight (12g lighter than the previous generation)
 - Premium MOSFETs (Toshiba MOSFETs)
 - Super BEC. Internal BEC features booster circuitry can output the current/voltage of up to 6A/6V and power various servos without connecting any extra receiver battery.
 - Built-in electronic switch (with a lifespan of over 50000 on/off cycles, dust-proof and shock-resistant design)
 - Built-in capacitor module saves space and weight making the wiring simple and neat.
 - PWM Frequency tuning - guarantees precise and accurate throttle and brake control for all classes of competitions (esp. the Stock class).
 - Maximum Cooling performance - Separate Programming/Fan Port
 - The separate PRG/FAN port on the ESC can power an external fan to maximize cooling performance or connect the ESC to an LCD program box or WiFi module for ESC programming.
 
Specification:
p/n: 30112603
Application: 1/10 - 1/12 Brushless sensored system
Cont.: 120A
Peak Current: 830
Input: 1S LiPo/3-4 Cells NiMH
BEC output: Switch Mode:6V/3A
Programmable: Yes
Firmware update: Yes
WiFi Module: Enabled
Dim.: 37.5x31x15.9mm
Weight: 35.6g 1.26oz
Includes:
- (1) ESC
 - (1) RX Wire
 - 14 Ga & 12Ga Wires (Two Types)
 - Bonus accessories (heat sink, etc)
 - User's manual
 - Decal
 
              