Brand new, unopened wired headphones. I purchased these to open a cram school, but I was unable to do so because my mother needed care. These are size-appropriate for elementary school students. The ATH-S100 is said to have excellent cost performance, and I remember this model selling well on other sites. I liked the price and quality of the product, and after searching and searching, I finally managed to gather 10 of them... I purchased them on Amazon for 2180 yen. The design is gentle on children's ears, and the fact that they don't require batteries makes them easy to use. Manufacturer: audio-technica JAN: 4961310123963 Model Number: ATH-S100 WH ◼️Product Description ● Powerful and clear sound reproduction with the newly designed φ36mm driver. ● Easy-to-use single-sided 1.2m cord for stress-free listening. ● Lightweight and compact body for comfortable wearing even for long periods. ◼️Specifications ・Weight (approx.): 110g ・Type: Sealed dynamic ・Driver: φ36mm ・Output sound pressure level: 104dB/mW ・Frequency response: 15〜22,000Hz