2.4G DIY Mini RC Drone Building Block STEM toys+altitude hold system

Detail Description:

2.4G DIY Mini RC Drone Building Block STEM toys+altitude hold system

An additional 4 grams or so of extra items can be added. 
Raw Materil:ABS
Frequency:2.4G
Drone Battery: 3.7V600Mah lithium battery(included）
Transmitter Battery:4pcs 1.5V "AA" Batteries(not included)
Charge time:45mins
Flying time:6-7mins
Control distance:30-50m
Functions:Ascending/descending/turning left/turning right/forward/backward/flying left/flying right/hovering/: 3D rollover/speed switching between fast and slow gears/headless mode/one-key return/assembled four-axis.