What's stuck to the top

[Sprocket]

of the Mavic Pro drone in the pic in this link? Scroll down a little for the pic.
I think it is a strobe, but what kind is it.
Maybe it is a little bitty red and blue bar light. Or maybe a tiny siren? Thanks
New Year's Eve Times Square drone grounded due to weather, NYPD says

 

[Starz]

Here go you! There are a few variations of these. Also google “STROBON”
High Intensity Cree LED White Strobe Light for Drones FAA 107 Compliant for Night Flights Fits All Multirotor Quadcopter DJI Inspire Phantom Mavic RC Aircraft YuneecTyphoon H Q500
The larger one is overkill in my opinion.
The single bulb unit works well enough and does not take up a lot of room. Just need a little Velcro.
STROBON Cree LED Strobe Light | Phantom Help

 

[Sprocket]

Here go you! There are a few variations of these. Also google “STROBON”
High Intensity Cree LED White Strobe Light for Drones FAA 107 Compliant for Night Flights Fits All Multirotor Quadcopter DJI Inspire Phantom Mavic RC Aircraft YuneecTyphoon H Q500

You are probably right, but the one mounted above the camera looks different to me. I have the ones that mount to the folding arms, but the top one looks like possibly 3 forward and 3 backward shining leds. Thanks

edit: It would be kinda neat to have a tiny siren or something programmable to sound like an F-15.

 

[Flycaster]

Those are cree LEDS. One on the front top ( I call that the Tick Position),
And the others are the same, just with little 3d printed holders that you can get for 3/4 bucks apeice.