I have kept it unused. I will wrap the box in cushioning material and ship it. This is a pro-po set consisting of a TRE-01 unit that integrates a receiver and an ESC (Electronic Speed Controller), a servo, and a wheel-trigger type transmitter. Because it uses the compact TRE-01 unit, it is ideal for the Star Unit series of RC cars. The running power supply supports 4.8V using 4 Neo Champ batteries and 6V using 4 Power Champ batteries, as well as the general 7.2V battery for RC car power supplies, so it can also be used for 1/10 and 1/12 RC cars. Of course, it is a 2.4GHz specification that does not require crystal replacement or band management and allows multiple units to run. Furthermore, the transmitter has a switch on the back that allows you to switch between normal and power speeds in two stages with a single push. Also, the grip thickness can be adjusted by attaching and detaching the grip cover, and the trigger cover can also be removed. Even those with small hands can easily grip the grip, making it easier to operate the reverse. ★TRE-01 unit: Continuous maximum current: 60A Normal mode: Forward 50%, Reverse 50%, Power mode: Forward 100%, Reverse 50% Motor operation: Forward, Reverse, Brake Usable motors = 370 (with crimp terminals), 380, 540 (25 turns or more, sport tune)