Features:
Item:                       30A
continuous current:         30A    
burst current (10A):        40A
battery(cell):              2~3
Dimension:                  55 * 25 * 8
Wight(g):                   19
BEC mode:                   linear
BEC output:                 2A/5V
programmable:               YES
Package size: 12 * 10 * 3cm / 4.8 * 4 * 1.2in
Package weight: 150g / 5.2 oz

Package list:
4 * MR.RC 30A Brushless ESC Speed Controller