This is a Dynamite 120 Amp, 2-6S, Brushless Marine ESC. This ESC is the stock replacement for the Pro Boat Blackjack 29 V3, but can also be used in any marine application that could benefit from a high current, water cooled, programmable ESC. 

Features: 

• 120A Continuous current
• 2-6S LiPo / 6-18 cell NiMH compatible
• Fully Programmable
• Waterproof and water cooled

Specifications: 

• Forward: Yes 
• Reverse: Yes 
• Brake: Yes 
• Time Delay Brake: Yes 
• Continuous Maximum Current: 120A 
• Input Voltage: 2-6S LiPo, 6-18 Cells NiMH 
• Input Connector Types: EC5 x2 
• Output Connector Types: 5.5mm Bullet 
• Momentary Peak Current: 720A 
• Length: 2.40 in (61mm) 
• Width: 2.26 in (57.3mm) 
• Height: 1.19 in (30.2mm) 
• Weight: 5.29 oz (150g) 
• BEC Voltage: 6V 
• PWM Frequency: 8kHz 
• Overload Protection: Yes 
• Full On Resistance: .0005 ohms 
• Auto Cutoff: Yes