Vw rcd 300 vs rcd500 weight difference volkswagen

Rcd 300 Weight: 2.142 KG Rcd 500 Weight: 2.846 KG RCD 300 single cd player (lots of free space, why it weighs less) RCD 500 6 cd player takes space inside up with multichanger has moving parts and is heavier feel s a lot heavier even though the scales reading doesnt look like much of a difference: 704 grams