Strap hook and FPV monitor holder hole more convenient for user. An aperture of FPV display holder: M6 thread (1/4 thread) (English screw) The strips on the trigger increase the touching friction, that's will be enhance the control ability of throttle. Added a hook for lanyard, it makes driver control more convenient and not bulky. CH3-CH6 can be customized to VR, 2 of three-way switches and tact switch, the tact switch SWA can be used for cruise control mode. The handle shape is more linear and handy with the ergonomic design. (8.8(H) ''*6.9(L) ''*4.6(W)'') and only weighs 0.32 kg (11.3oz). No need purchase new radio when we have new function, just need to update latest firmware to add. latest firmware download on Radiolink official website or ask after-sales service. Not support update firmware by Mac computers RC6GS v2 controller with reverse polarity protection circuit, do not worry about it damage even you insert wrong polarity. JST(2Pin)connector is easily adapted for various battery, such as: 6*AA batteries(included battery tray) or 2s-4s LiPo, Lithium battery.( Battery sold separately ) Low Voltage Remind: set up in Menu (ALARM).