["【Bluetooth 5.3 Headphones-Faster and More Stable to Connect】Airbuds 4 uses advanced Bluetooth 5.3 technology to provide faster more stable connection and transmission stronger anti-interference lower latency and lower power consumption. Youll experience smoother clearer music playback and calls than ever before. Supports IOS/Android/Windows system devices with Bluetooth function." 【Crystal Clear Sound Quality and Replaceable Earbuds】The wireless Bluetooth headphones are equipped with 13mm diaphragm speakers and HD rendering technology to provide crystal clear high sound quality. In addition the earplugs are available in S M and L sizes. Designed with excellent ergonomics for a custom fit that fits most people it fits snugly around your ears providing long-lasting comfort and a secure fit during workouts or sports. 【Lasts All the Day Music All the Way】In-ear Bluetooth headphones can last up to 7 hours of music playback (80% volume). Paired with a 400mAh capacity charger the battery life is at least 36 hours giving you an excellent experience of ultra-long battery life. If you charge the earphones for 10 minutes you can listen to music for 55 minutes. 【Smart Touch and Portability】The unique touch function of Airbuds4 earbuds headphones makes it more convenient to use. Click once to play/pause music and answer calls and voice assistants. Double-click to fast forward/rewind and press and hold to adjust the volume. You can easily control it without operating your phone. Its sleek portable design makes it easy to carry while maintaining a stylish look. "【IPX7 Waterproof Headphones】The earbuds wireless noise cancelling use IPX7 waterproof technology which can effectively prevent damage from sweat and raindrops. Whether youre sweating it out during a workout running in a drizzle or listening to music while hiking biking or outdoors they stay safe and secure."]