I wanted my pipe low and my boat light, as a result my radio box became quite small (see pics). Seals with 50 mm tape, runs on four AAA batteries, receiver is Futaba 1024 PCM. Attaches to rail with rubber band and aligns with glued on pins. Worked fine for the maiden voyage but I am not about to bet on the lifetime for the throttle servo, engine vibrations might eat it. My guess is it will be fine though.