This is the Sennheiser IE900, the flagship wired earphones from the renowned German audio brand Sennheiser. Featuring advanced acoustic design with proprietary "X3R technology" and a high-quality aluminum housing, this high-end model boasts overwhelming resolution and natural, beautiful sound. Sennheiser IE900 【Complete with Accessories / Authentic】 ⸻ Product Condition • All accessories have the same serial number (authentic) • Minor scratches and small marks on the main unit, but no impact on use or sound quality • Tested and working, both left and right sides produce sound normally • Cables and accessories are in good condition • Used and stored in a non-smoking, pet-free environment ⸻ ■ Included Accessories (all genuine) • Carrying case • Detachable cable (MMCX) • Genuine 2.5mm balanced cable • Genuine 3.5mm unbalanced cable • Genuine 4.4mm balanced cable • Instruction manual set • Eartips (silicone/foam) ※ All items shown in the photos are included ■ Main Features • Sennheiser's top-of-the-line IE 900 • High resolution and balanced sound quality thanks to X3R technology • Designed in Germany, manufactured in Ireland • Resonator chamber built-in to suppress distortion and masking • Para-aramid reinforced cable + Fidelity Plus MMCX connector • Adjustable ear hooks for a stable fit • Lightweight design (approx. 4g per side) for comfortable long-term use ■ Product Specifications • Model: SENNHEISER IE 900 • Connection method: Wired (MMCX, supports cable replacement) • Wearing style: Canal type • Color: Gray系 (Gray-toned) • Frequency response: 5Hz ～ 48,000Hz • Impedance: 18Ω • Plug: 2.5mm (4-pole, balanced) • Cable length: Approximately 1.25m • Weight: Approximately 4.0g (per side) • Distortion rate (THD): 0.05% For those seeking high-quality earphones, or those who want to try the IE 900. Please feel free to ask any questions in the comments. Shipping • Shipping included / Secure anonymous shipping • Carefully packed and shipped within 24 hours This model is highly recommended for those seeking high sound quality. For those who don't mind a few minor scratches, this is an excellent value. Please consider this opportunity.