1 INTRODUCTION
Thank you for buying HUBSAN products. The quadcopter is designed as an easy to use, full
featured RC model capable of hovering, fast forward, and aerobatic flight manoeuvres.
Please read the manual carefully and follow all instructions in this. Be sure to retain the
manual for future reference, routine maintenance, and tuning.
1.1 Important Notes
This RC quadcopter is not a toy, it utilizes various high-techs to provide superior
performance.
Please read this manual carefully before operating this product. Any improper use of this
product will result in serious injury. Be aware of your personal safety, safety of others and
your surrounding environment.
We recommend that you obtain the assistance of an experienced pilot before attempting
to fly our product for the first time.
2.1 Caution
R/C quadcopter have parts that move at high speed, thus posing a certain degree of
danger. Pilots are responsible for any actions resulting in damage or injury from the
improper operation of their R/C aircraft models.
Choose a wide open space without obstacles. Do not operate R/C aircraft near buildings,
crowds of people, high voltage cables, or trees to ensure the safety of yourself, others
and your model.
Operate this unit within your ability. Do not fly when tired or after drinking or when
impaired by medication. Improper operation may cause damage to people and property.
2.2 LiPo Battery Recharging
Your quadcopter is powered by a Lithium-Polymer (LiPo) battery.
Never recharge your battery whilst it is inserted in your model. It can catch fire leading to
the total destruction of the item.
If you do not plan to fly your model for a week or more, store the battery approximately
50% charged to maintain battery performance and life. To achieve a 50% charge, fly the
model until the battery requires recharging. Charge the battery for half the time typically
required to fully charge the battery.
2 SAFETY NOTES
THE HUBSAN X4
1
THE HUBSAN X4
24
20. Why is it that when I record video, the SD card only recorded videos of 75MB total, but the file
size when read on the computer remains only 175MB.
Answer
：
When the SD card is properly formatted in the TX, it will use special formatting that splits
the continuous space in order to speedup recording and to have smooth playback. Therefore it
shows a smaller file size when its properties are viewed on a computer. The SD card is full when the
the LCD on the TX displays “Full”.
Noted that when SD card is formatted in the TX, you must reformat it if you intend to use it in any
other device. If you intend to use the SD card in another device, first save any files to your computer
before formatting the card.
