Powerful deep bass sound & waterproof, dustproof, shockproof "TRIPLE PROOF" compatible tough body In addition to the rubber protector that protects the earphones from impact, the "TRIPLE PROOF" tough body that is IP55-equivalent waterproof and dustproof has been realized while maintaining the deep bass sound that was popular in the "XX" series . It is resistant to sweat, water and dust, and can be used with confidence even in active scenes such as outdoors and streets. Achieve a stable wireless connection It supports Bluetooth ® standard Ver.5.0 and Power Class1 and realizes stable wireless connection by optimizing the antenna position. Achieves long-term playback for a total of approximately 14 hours (* 2) with the built-in battery and charging case A total of about 14 hours * 2 long-time playback is possible , including continuous playback for about 4 hours * 2 and full charge (about 4 hours * 2 x 2.5 times) with the charging case Easy operation with one button and auto on / off & connectYou can adjust the volume / play / pause / forward / backward the song with a simple operation using the one button on the left and right main unit. Once the device has been paired, simply remove the earphones from the charging case to turn it on and you're ready to listen to music. After use, return the earphones to the charging case and the power will turn off automatically. Equipped with a microphone that supports activation of the voice assistant function (* 3) and enables hands-free calling