This is my second Syma 107G purchase in as many weeks!
They are so stable inflight and well built it's amazing fun for the price you pay at under £20. The onboard 150mAh 3.7v lithium flight pack is almost fully charged and just needs a few minutes 'top up' to complete its charge - I used the supplied USB lead to my computer. Switch the Transmitter on first followed by the heli. The transmitter light flashes to prompt you to open the throttle fully and then close off. This configures the transmission signal to the receiver.....than away you go!
Charging time takes around 60 minutes for about a 6 minute flight and, afterwards, it's best to allow the heli battery 15minutes or so to cool down after flying before recharging.
Strictly for indoor flying it's great fun on a wet or cold day to pass some fun time. If an 'ole codger of 67years like me can fly it, then so can anyone.