T-FHSS type for electric; Built-in antenna receiver; Dimensions: 1.4 x 0.9 x 0.5 inches (35.1 x 23.2 x 12.5 mm); Weight: 0.2 oz (7.0 g); Frequency: 2.4 GHZ T-FHSS; Uses: 7PX/7XC/4PM/4PX/4PV/4PLS/4GRS/3PV; Power: 4PV; Power Supply: 4GRS/3PV; Batteries are not included).