This nano quad integrates a flight controller, gyroscope, accelerometer, and radio receiver all onto a single motherboard to minimize space requirements and complexity. A 3.7V 1S lithium polymer battery drives the X4's four brushed motors.
Although the X4 [or more specifically, it's target demographic] is likely to see a number of crashes, the nano-sized quad is easily repairable and simply constructed. With a total of five screws and a snap-in mechanism holding the frame together, even an ameteur can open the casing to get to the motherboard in a few seconds. Most basic repairs require some soldering, giving new hobbyists the opportunity to sharpen their skills on an especially challenging platform.
Brand Name: Hubsan
Item Name: Hubsan H107D FPV X4 Quadcopter
Motor(X4): 0820 Coreless
Frequency: 2.4GHz + 5.8GHz (Video transmission)
Transmitter: 2.4GHz 4 channels vs 4.3 Inch LCD
Control distance: 50 - 100meters
Live video distance: around 100 meters
Battery: 3.7V 380mAh li-po battery with auto cut off safety PCB
Charging time: about 30 minutes
Flight time: around 7 minutes
Camera: 0.3M pixels camera included, resolution: 640 x 480
Memory card: SD card inserted in TX, Micro SDHC class6 2-16G (not included )