**Product Specifications:**
**Brand:** OKSJ
**Quality Assurance:** We promise self-operated quality and guarantee no returns. If the noise reduction effect is not satisfactory, a full refund will be provided.
**Quality Control:** Each machine undergoes manual quality inspection with 100% inspection rate.
**Warranty:** VIP service includes 1-year trial, lifetime support, and 30-day free trial with free replacement.
**Noise Cancellation:** Active noise-canceling headphones with 2024 new model featuring -40dB deep noise reduction and 5 selectable sound effects.
**Bluetooth:** Equipped with the latest Bluetooth 5.4 chip for low latency and powerful algorithm for personalized EQ sound curve.
**Design:** Ergonomic design with exquisite details, 40-hour long-lasting battery life, slide-adjustable volume, and full-color LCD touchscreen for easy control.
**Noise Modes:** Dual-mode active transparency noise cancellation with 40dB deep noise reduction and independent sound control structure.
**Noise Reduction Application:** Effective noise elimination for various scenarios such as subway stations, airports, streets, cafes, and offices.
**Sound Customization:** Precisely define EQ sound curves with touch screen control without the need for a mobile app.
**Additional Features:** Earphone locator with built-in speaker, 5.4 chip for enhanced functionality, 40-hour battery life, instant pairing, and intelligent touch control technology.
**Comfort:** Ergonomic design for stable and comfortable wearing experience, anti-loss feature, and support for precise earphone location tracking.
**Low Latency:** High-definition audio and video synchronization with stable connection and low latency for an immersive experience.
**Smart Touch Control:** Upgraded touch control features for power on/off, play/pause, track switching, and customizable Bluetooth settings.
(Note: The specifications have been summarized and organized based on the provided information.)