I purchased this item new and used it a few times before storing it in a dark place at home. I tested it before listing it, and it works without any problems. Please check the details of the specifications below. Everything in the photos is included. Please understand that this is a used item before purchasing. ---------- ◆ Equipped with an φ8.5mm driver unit, this product delivers rich, powerful bass and clear mid-high range reproduction, realizing immersive sound from its dynamic form. ◆ Carbon + Aluminum Housing: The lightweight, high-strength, and vibration-dampening carbon fiber and machined aluminum composite reinforced body suppresses unwanted resonant vibrations, maximizing the performance of the driver. ◆ Flexible Cable: A flexible cable using OFC (oxygen-free copper wire) that minimizes transmission loss and enables pure sound source transmission. ■ Specifications ■ Type: Dynamic sealed Driver diameter: φ8.58mm Frequency response: 6～24000Hz Maximum input: 200mW Impedance: 16Ω Output sound pressure level (sensitivity): 102dB Plug: 3.5mm stereo mini plug Cord: 1.2m Weight: 4.8g (excluding cable) Accessories: Silicone ear tips (S, M, L, 2 each) *M size is attached to the main unit, carrying bag