Flat Head Plug Headphones 3.5mm with Microphone} Parsing process: 1. Cleaning marketing terms: remove modifiers such as "second-generation upgrade", "oxygen-free copper wire", "HiFi" and "transparent". 2. Retain the core noun: extract "flat plug earphone

▸ Interface type: 3.5mm gold-plated plug | With microphone
▸ Cable structure: high-purity oxygen-free copper core
▸ Driver unit: HiFi-grade flat-head plug sound driver
▸ Device compatibility: Huawei/Xiaomi/OPPO/vivo mobile phone
▸ Appearance structure: transparent cavity design