Features:- >Dual-Driver Hybrid Setup. >12mm Dual-Cavity Dynamic Driver with PAR Diaphragm. >BQEYZ Developed Bone-Conduction Driver Unit. >High-Frequency Bone-Conduction Technology. >High-Quality Stock Cable With Modular Termination Plugs(3.5mm+4.4mm). >CNC-Machined Shell Structure. >All-New Rich Blue Finish. >Quality Accessories With Multiple Sets Of Eartips. BQEYZ Winter Ultra is an upgraded variant for their highly-acclaimed Winter dual-driver hybrid IEMs. The pair boasts outstanding design with excellent sonic capabilities. You get a rather unique combination of dual drivers featuring a 12mm dual-cavity dynamic driver unit alongside a custom-developed Bone-Conduction Driver Unit. The pair promises top-level resolution with amazing clarity and speed throughout the frequency band. The pair comes with a high-purity stock cable with a swappable termination plug system!! Upgrades From BQEYZ Winter:- Compared to the OG Winter IEMs, the new Winter Ultra has got a custom low-frequency filter for enhanced low-frequency band. The pair now has a more balanced sound approach than the OG model. It supports a lower 5kHz peak promising a smoother and cleaner response. You also get balanced eartips for a clear response. The stock cable has also been upgraded with a modular high-purity cable. Also, the pair is now available in a stunning blue color. Unique Dual-Driver Hybrid:- Winter Ultra is a dual-driver hybrid set of IEMs with a driver configuration unique to the Winter series only. The pair packs a combination of a 12mm dual-cavity dynamic driver and a customized bone-conduction driver unit. The 12mm driver unit is a full-frequency performer while the BCD driver is implemented to enhance the high-frequency response with the pair. Both drivers work in complete harmony, presenting cleaner sound with high-resolution clarity. Powerful 12mm Dynamic Driver Unit:- BQEYZ Winter Ultra comes with a custom-developed 12mm dual-cavity dynamic driver unit. This full-=frequency driver uses a high-quality PAR material diaphragm which is ultra-thin in its nature. It has more flexibility and elasticity than the traditional LCP diaphragm. BQEYZ has designed this driver with a 0.25mm gap between the magnet and the U-bracket for improved resolution. It serves as a powerful companion for the 11.6mm PZT BCD driver unit. 5-Axis CNC Machined Ear Shells:- BQEYZ Winter Ultra features beautifully designed ergonomic ear shells. The shells are designed with a high-precision 5-axis CNC machining process. They are crafted with utmost precision and quality giving the pair an excitingly premium finish. The pair has an eye-catchy rich blue color scheme. High-Purity Modular Cable:- BQEYZ has upgraded the stock cable for the Winter Ultra. It now comes with a high-purity single-crystal copper silver-plated cable with swappable termination plugs. The earphone side connectors are 0.78mm 2-pin while the termination plug can be replaced at will. Users will get 3.5mm and 4.4mm plugs in the package.