Thank you for your interest in the product. Please read the following and await your bid. [Product Description] Title: AVIOT Wireless Earphones TE-D01d Black Manufacturer: AVIOT Description: ● JAPAN TUNED: More Japanese sound. Based on the 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 part of the low frequencies and use "tricks" to stimulate the hearing more than necessary, we aimed to reproduce the original sound 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 speakers, and achieved a deep, immersive low-frequency range, a mid-range that plays beautiful vocals with excellent sound image localization, and a high-frequency range that is clear and does not hurt 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. ● With AVIOT, you can connect 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 places with harsh radio wave environments, such as on trains and in stations. [Product Condition] Condition: Unused/New Notes: New [Other] Please ask if you have any questions.