R, C Plane At 4, 000 Feet

Trying to figure out how high I can fly my AXN Floater Jet from Hobby King. :) This is the highest I have flown by far. I meant to glide at the top, but I was too focused on watching the plane to remember Altimeter is an Eagle Tree V4 unit. Video camera is a, 16 keychain camera with v. 18 software. Because the altimeter only has one digit, it has to flash to display a measurement. Like if it went to 2, 345 feet, it would flash, 3 flash, 4 flash, 5. :) I wonder if I can see it