This is the AquaCraft Marine 45 Amp Brushless Electronic Speed Control.
                      
Water-cooled aluminum case with built in water cooling and waterproof. Also comes with built in BEC (battery eliminator circuit).

This is a plug in play unit when combined with the Stock Super Vee 27 or
Stock SuperVee 27R

SPECS:   
Length: 3.15" (80mm)
Width: 1.5" (38mm)
Height: 0.3125" (17mm)
Weight: 3.8oz (109g)
Wire Gauge: 14 gauge
Max Output Power: 900 watts
Battery Connectors: Two Male Deans Ultra Plugs
Motor Connectors: Three 4mm gold-plated bullet connector.
Input Voltage: 12-14 NiMH, NiCd cells, 8-20V input w/o BEC
Output Current: 45A continuous maximum, 60A surge maximum
On-resistance: 0.003 ohms
Thermal Cutoff: 230° F (110°C)
Operating Frequency: 8.5KHz
BEC: 5.2V/2A
Timing Angle: 10°

NOTE: This is not Lipo Ready. Requires external low voltage cutoff to work with lipo packs.