Clear Call with 4-Mic Noise Cancellation: The M35 4-Mic Bluetooth In-Ear Headphones pick up your voice from multiple directions , so that the other side can hear you clearly. Environment Noise Canceling (ENC) work together to monitor the noise around you. In-Ear 3D Stereo Sound Quality: With the improved sound components, the wireless headphones offer you rich, clear bass and clean treble. The integrated 10 mm dynamic driver of the in-ear Bluetooth headphones ensures an absolutely impressive listening experience when listening to music, watching films and making calls. 25 hours play time: The wireless Bluetooth headphones have a maximum battery life of 5 hours. At the same time, fast charging via USB-C port takes only 1 hour. With the included charging box, the headset can be charged up to 4-5 times for a total of 25 hours of use. Any mobile phone or tablet with Bluetooth connection function can be compatible with headphones. One-step pairing: Just take the Bluetooth headphones out of the charging case and they will automatically turn on and pair (after the first pairing). With a stable connection distance of up to 12m, you can conveniently control your music and phone at home, in the office and during your movement. Sporty design and IPX5 waterproof: The wireless in-ear earphones with ergonomic design and the best-sized eartips fit more securely in your ears than most headphones. The sealed case and waterproof polymer nano-coating protect the headphones well from rain and sweat, making them ideal for running, yoga, cycling and even intense exercise.