The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! Universal Mobile Phone Earphones With Earphones And Microphone Wired Bass Stereo Sports Wired Earphones Features: The body is paired with an elastic and comfortable ear loop, which firmly fits your ears and cannot be shaken off Phonetic quad core, instantly triggered quad core earbuds Wearing it all day without pain, the slanted ear style is lightweight and non oppressive, and long-term wearing is comfortable without damaging hearing Ergonomic collar design with a thoughtful between sports and leisure Widely matching and audio source devices with 3.5mm circular hole interface Product Description: Product name: In ear earphones Horn: 10mm Sensitivity: 105 ± 4dB Impedance: 320 Frequency response: 20-20kHz Plug: 3.5mm Line length: 1.2m Power: 5mW Viflosae Headphones for School Universal Mobile Phone Earphones With Earphones And Microphone Wired Bass Stereo Sports Wired Earphones Kids Headphones for School Deals of the Day Clearance The body is paired with an elastic and comfortable ear loop, which firmly fits your ears and cannot be shaken off Phonetic quad core, instantly triggered quad core earbuds Wearing it all day without pain, the slanted ear style is lightweight and non oppressive, and long-term wearing is comfortable without damaging hearing Ergonomic collar design with a thoughtful between sports and leisure