To ensure you can enjoy the powerful bass that's acclaimed in the [XX] series, our engineers have specially tuned these earphones, enhancing the deep bass while still allowing you to clearly hear each instrument and vocal. They also feature three sound modes (NORMAL/BASS/CLEAR), allowing you to adjust the bass volume to suit your mood or preference. The earphones feature shock-resistant elastomer rubber protectors and a stick-type design that fits comfortably in your ear. Each earphone weighs approximately 4.4g, and the slim charging case fits easily in a bag or pocket for easy portability. In addition to the shock-resistant rubber protectors, the earphones are also TRIPLE PROOF, achieving IP55-equivalent waterproofing*1 and dustproofing*1. These earphones are resistant to impacts, sweat, water, and dust, making them ideal for active use in outdoor and street situations. *1: Equivalent to JIS dust and water resistance class 5 (IP55). Compatible with earphones only. The earphones can be used for up to 7 hours*2 on their own, and 24 hours*2 when fully charged using the charging case. *2: Varies depending on usage conditions. Simply remove the earphones from the charging case to turn them on, and they will automatically connect to devices that have been paired once. After use, simply return the earphones to the charging case to automatically turn them off and begin charging.