"Vintage" would be the term for these kind of stuff. It's a WM-4 walkman from 1983. Though I'm not sure about the price, but these could be expensive depending on the condition and rarity. I saw a Blue one on ebay being sold at 500++ SGD.
maybe u can try sell at ebay...who knows there is buyer there
@deletto86 thanks for advice! Will look into it 😄
Sony Walkman WM-4 Red / Cassette Player (Working)
We encourage users purchasing high-value items to meet and verify their purchases at a safe place. — Carousell Admin
Tanah Merah MRT Interchange (EW4)
Or Orchard MRT, depends on time and schedule