Thank you for your interest in the product. Please read the following and await your bid. [Product Description] Title: AVIOT Wireless Earphones TE-D01d Red Manufacturer: AVIOT Description: ● JAPAN TUNED: More Japanese sound. Based on the multi-award-winning previous model, AVIOT's audio expert team spent a lot of time tuning in 0.1dB increments. Unlike many overseas products that simply boost a portion of the low frequencies and use "tricks" that stimulate the auditory sense more than necessary, we aimed for original sound reproduction with the same philosophy as high-end audio, and pursued Japanese sound directly. ● Equipped with the latest SOC Qualcomm QCC3026: Power-saving, and boasting overwhelmingly high DA (Digital to Analog) conversion performance, the latest SOC QCC3026 is adopted. We carefully selected the best speaker drivers from the lightweight and high-speed graphene diaphragm speaker drivers, and achieved a deep, immersive low-frequency range, a mid-range that produces beautiful vocals with excellent sound image localization, and a high-frequency range that is both clear and non-piercing to the ears. ● Up to 9 hours of stamina playback: By combining the aforementioned power-saving chip with AVIOT's design know-how, we have achieved a maximum of 9 hours of continuous playback with the earphones alone, despite the small and lightweight body. *Playback time may be shorter when using the higher-quality aptX codec, or depending on radio wave conditions and volume. ● AVIOT connects more: We have further improved the built-in antenna by utilizing advanced high-frequency circuit design technology and implementation know-how. The synergistic effect with the latest SOC OCC3026, which is extremely resistant to interference, has succeeded in minimizing sound interruptions even in harsh radio wave environments such as trains and station premises. [Product Condition] Condition of use: Used about 5 times, but didn't fit, so it was stored in the box. The parts that can be washed with lukewarm water have been washed, and wiped with a cotton swab for children, but please refrain from purchasing if you are sensitive. The ear tips in the bags in photos 9 and 10 have never been used.