This is the Tactic 2.4GHz Three Channel Receiver.

FEATURES: 2.4GHz technology

INCLUDES: Tactic 2.4GHz 3 channel receiver

REQUIRES: Installation and connecting battery and servos

SPECS:    Length: 44.5mm (1.75")
          Width: 25.9mm (1")
          Height: 13.9mm (0.55")
          Weight: 10g (0.35oz)