SOUND: Boom 100 offers a truly natural, authentic sound and powerful bass performance with 10mm dynamic speakers and enhanced bass. The latest version software provides loud volume and lossless sound quality for Hifi music or stereo phone calls. BLUETOOTH 5.0: Adopt professional Bluetooth 5.0 chipset with high-resolution decoder built-in and advanced audio coding technology to deliver extraordinary Hi-fi sound with low latency. IPX4: High-level water-resistant makes it suitable for sports to prevent water splash. Ideal for sweating it out at the gym or running outside. SMART TOUCH: Simply tap the earbuds to play/pause music or answer the incoming calls, the smart touch control upgraded the multifunction button to avoid pressure in-ear when securing fit. MUSIC TIME: Battery powers for 5 hours non-stop listening. With a portable charging case, playtime gets boosted to a whopping 24 hrs. The improved case cover design ensures charging and storage convenience.