Features: 100A brushless ESC with 5V/5A BEC. Water cooling. Waterproof design (Need to use 704 silicone rubber by yourself). Comes with a limited range of programming functions and are designed to be plug-n-play. A perfect ESC for those looking for something simple to use and economic. Specifications: Cont current: 100A Burst current: 120A BEC model: Switch BEC output: 5V/5A Recommend battery: Li-ion/Li-poly 2-7S; Ni-MH/Ni-Cd 6-20NIMH Cooling: Water-cooled SC weight: 99g ESC size: 8.5 x 4 x 1cm Dimensions: 3.35 in x 1.57 in x 0.39 in (8.5 cm x 4.0 cm x 1.0 cm) Weight: 3.46 oz (98 g)