This is the Tactic 2.5GHz AnyLink Power Adapter for Spektrum Transmitters.
Enables pilot to fly any Transmitter-Ready airplane with the Spektrum transmitters listed below
Allows the AnyLink SLT 2.4GHz radio adapter to function with the Spektrum DX4e, DX5e, DX7s, DX8 DX10t and DX18 transmitters
Powered by a 6.6V 200mAh rechargeable lithium iron phosphate (LiFe) battery
Tactic 2.5GHz AnyLink Power Adapter for Spektrum Transmitters with Power and Signal Connectors, two sections of Hook and Loop Material and Instruction Sheet
Dimensions: 1.2 x 0.83 x 0.59″ (32 x 21 x 15mm)
Length of Signal Connector: 6.5″ (165mm)
Length of Power Connector: 4.25″ (108mm)