PDF] Identification Based on Concurrence Order of Metadata | Semantic Scholar
Are these both MP3 players? There's no identification on the black one, and the red one doesn't seem to have a product number or name. : r/whatisthisthing
BC32 Dual USB Charging Bluetooth Hand-free Car Charger FM Transmitter MP3 Music Player Car Kit, Support Hands-Free Call & Micro SD Recording & Voltage Detection – Alexnld.com
10 Best Dac Mp3 Player – Review And Recommendation – PDHRE