This is the Mamba Monster 2 25V Electronic Speed Control from Castle Creations.

FEATURES: Compatible with on-road, buggies, truggies and monster trucks
            running up to 6S LiPo batteries and weighing up to 15lbs (6.8kg)
          Waterproof design allows running in nearly any environment (see
            COMMENTS below)
          USB programming capability via the Castle Link USB adapter (CSEM6300
          Solder posts allow battery wire length and direction to be easily
            changed
          One year limited warranty through Castle Creations beginning at date
            of purchase. Warranty does not cover abuse, neglect, or damage due
            to incorrect wiring, over voltage or overloading

INCLUDES: Mamba Monster 2 25V ESC with Cooling Fan, On/Off Switch, Fan Plug,
            Motor Wires, Receiver Wire with Connector and Instructions

SPECS:    Input Voltage: 2S-6S LiPo
          Max Continuous Amperage: 120A full continuous operation with cooling
            airflow
          BEC: User selectable output between 5 and 7 volts
          Brake: Proportional
          Revesible: Yes, with lockout
          Dimensions: 1.86 x 2.19 x 1.33" (47 x 56 x 34mm)
          Weight: 3.93oz (111.5g) without battery connector

COMMENTS: Not intended for use while submerged in liquid. If operated in wet
            conditions, rinse with fresh water to remove dirt or corrosives
            then fully dry unit. Fan is not water resistant. Remove fan from
            ESC before exposing vehicle to liquids.

                                                                   jxs 01/14/13
                                                                         ir/jxs