Please do not compare the quality of this helicopter with other famous and expensive brands, and do not purchase this helicopter if you are after the quality has to be (or close to) as good as famous MSR or Trex 100 (price more than a double & double) because this helicopter might not be suitable for you.
** This is just a note for you that HJ997 Transmitter allows you to switch between Mode 2/4 by just pressing a button but it seems they made a mistake in Mode (in terms of wording). Their "Mode 4" is actually our "Mode 2". Don't worry. You will receive your Mode 2 anyway.