I purchased this used from the e-earphone online store in May 2025. I used different ear tips and used them for about 10 hours. BQEYZ Spring 2 13mm Dynamic + 9-layer Piezo Ceramic + Balanced Armature A tribrid type. It allows you to listen to each sound range clearly and powerfully. Powerful low frequencies that don't lose to the soaring high frequencies. Vocals are close, and you can feel the breath. I really like them, but the fit didn't suit my ears, so I'm selling them. I will consider price negotiations after adjusting the accessories, etc., without the case. This is a used item. Please consider purchasing with the understanding that there is a degree of use. The following is an automatically generated description: BQEYZ Spring 2 wired earphones with a dynamic driver, in a stylish black/gold design. - Brand: BQEYZ - Model Name: Spring 2 - Color: Black/Gold - Cable Type: Copper - Driver Configuration: Dynamic Driver Thank you for viewing.