... backwardBattery capacity:3.7(580MAH)Operation area:40MController battery capacity:4*1.5AA (not included) Certificate:LED,FCC,EMC, ... :--1,Helicopter *1pcs,--2,Controller *1pcs,--3,nstruction *1pcs,--4,Chargers line *1pcs,--5,AB blade *1 pair,--6,Tail ... 2. stronger development ability3. better manufacture ability4. higher quality with reasonable price5. faster delivery time We look forward to sincere ...