◆ First-come, first-served item! ◆ Brand new, unused (operation not confirmed) ◆ Free shipping! Therefore, it may be simply packaged. If you need the outer box, please comment. If not, we may take it out of the outer box for packaging. ◆ Immediate purchase OK! ◆ This is a one-of-a-kind item. Brand: Trusmi Model: WS17-011 Color: Black Bluetooth version: 5.4 Transmission distance: Approximately 10 meters or more Driver unit diameter: Φ10mm Driver impedance: 32Ω±15% Sensitivity: 118±3dB Frequency characteristics: 20Hz～20kHz Battery capacity (charging case): 400mAh 3.7V Battery capacity (earphone unit): 35mAh 3.7V Charging time: Approximately 2 hours Continuous music playback time (earphone unit): Approximately 8 hours 【High-quality sound & ultra-low latency Bluetooth 5.4】 1. Adopting the latest Bluetooth 5.4 standard, significantly suppressing sound skipping. It achieves a wide communication range, fast connection speed, power saving, and stable, uninterrupted connection. It provides an environment where you can smoothly enjoy games and videos. 【ANC+ENC Dual Noise Canceling】 With dual functions of ANC (Active Noise Canceling) and ENC (Environmental Noise Canceling), it effectively cuts various surrounding noises. It reduces environmental noise, such as the hustle and bustle of the city and wind noise, by up to 98% or more*. *The noise reduction effect may vary depending on individual perception and environment. 【Reproduces rich sound with 10mm dynamic driver】 Equipped with a large 10mm dynamic driver. It is particular about delicate details and reproduces a rich sound with a sense of depth. It is carefully tuned to faithfully deliver the beauty of all sound sources, and you can enjoy transparent high frequencies and accurate, immersive sound quality. 【Seamless experience with game mode】 With dual-channel ultra-low latency mode (approximately 0.06 seconds), sound and video are perfectly synchronized. Furthermore, automatic connection is possible just by opening the lid of the charging case with hall sensor technology*. No troublesome operations are required. *Pairing is required for the first use. Management number 1011999