【Product Description】 Thank you for viewing. Air conduction earphones with an ear cuff structure that doesn't block the ears, allowing you to hear surrounding sounds for peace of mind and safety. The mechanism produces sound as if the speaker is floating in front of the ear, so there is no vibration or pressure on the ear like bone conduction earphones. It fits easily in any ear and can be used comfortably for long periods. You can use it without blocking out ambient sounds, so you won't miss approaching cars or important conversations, allowing you to use it with confidence. Equipped with the latest Bluetooth 5.3 for stable connection and automatic pairing, you can enjoy high-quality HIFI surround music, videos, and games. It has a small, high-performance microphone, making it excellent for call quality and ideal for online classes, telework, and meetings! The weight is only 3.8g per side. It's so light you'll forget you're wearing it, allowing you to spend the whole day comfortably. 5 hours of playback with the earphones alone, and 30 hours when used with the dedicated charging case. 【Product Contents】 ・Bluetooth Earphone Body (Black) ・Charging Case ・USB Charging Cable ※ Opened once for inspection. 【Shipping Method】 We will ship within 1-3 days after receiving payment. Shipping will be via Japan Post's Yu-Packet Post. Delivery will take approximately 2-4 days after shipping, but it may take longer due to weather conditions. Please contact us if it hasn't arrived within a week. 【Warranty】 If there are any defects after the product arrives, please let us know in the comments before leaving a review. We will definitely respond, such as by sending a replacement. "We strive for a pleasant transaction. Thank you very much."