JeromeKilby it has JST SM 2.54mm 3 Pin on both sides, the female end is the input or LED 5050SMD WS2812B number one at the start of the chang. the end of the 100 LED RGB Strip has a Male to connect to the next 100 LED RGB Strip. Red wire Is for the 5V DC power then comes he Green wire for data signal input female end and male for output, the white wire is ground.

JeromeKilby No it can not, but if you now someone in to electronics it can be done by putting in microphone jake on the back

JeromeKilby I have Google Pixel 3 Phone and use this head unit has no problem connecting to the phone and it uses Bluetooth 5.0, A2DP, LE, aptX HD but i not 100% that its bluetooth 4.0

JeromeKilby the size of the Head Unit A Thick Type Size: 178*100*105mm B Thin Type Size: 178*100*50mm

JeromeKilby You can by getting a Double 2 Din Fascias Kit to replace the existing sound unit in the Mazda 2 Dashboard

JeromeKilby No but i have installed so it not able to reflect light

JeromeKilby I have found that it will cut the black foam but the white will not, as the foam is not really white but clear so light just reflects off it making it look white. So when the laser is trying to cut throw the foam will dispersing the laser light, stopping it focusing its energy from cutting.

JeromeKilby That's about the only difference, I got the thick due to me living in Queensland Australia so it able to handle the hotter climate as it will have more airflow for it