I am confused about the additional items needed to complete

I purchased “Stacker” 2WD Mobile Robot w/ 2DOF Arm Chassis Kit. When I opened the box and started to read the instructions to assemble it said there are a few additional parts needed. I want to order them, but the items don’t completely align with the items in the online store. I don’t want to order the wrong item.

The additional items are a radio system (it looks like the one pictured is a Tactic transmitter, receiver and 4.8V AA battery pack, TTX404 model?)
Standard Hitec servo
Can someone help direct me to the correct items to purchase?
Thanks!!

Hi maarmstrong,

Here is a list of items needed to complete the Stacker robot:
2x HSR-1425CR continuous rotation servos (wheels)
1x HS-785HB winch servo (arm)
1x HS-422 standard servo (gripper)
1x Four-channel (or more) RC controller (Suggested DX5e)
1x Power: Batteries (4,8V to 6V total) and (Suggested 6V NiMH 2000mAh)

You can use a Tactic 6 channels and receiver instead of the DX5e it’s more expensive but you get a programmable transmitter.
Tactic TTX650 6-Channel SLT 2.4GHz Radio Controller
Tactic TR624 2.4GHz 6-Channel SLT Receiver

All the best,