TONSTEP Active Noise Cancelling Earbuds, Bluetooth 5.1 ANC in-Ear Headphones with MIC, Stereo Wireless Earphones 35H with Charging Case for iOS and Android, Sleeping, Sport(Black) 【Noise Cancelling Earbuds Have 4 Modes】The Wireless earbuds have 4 modes, ANC Mode: Immerse yourself in music with active noise cancellation. Transparency Mode: You can hear what's going on around you without taking off the earbuds. Game Mode: No sense of delay, you can hear it when you see it and enjoy the thrill of e-sports games. Normal Mode: Enjoy your true wireless earbuds whenever you feel like having fun. 【Bluetooth 5.1】- True wireless earbuds adopt advanced Bluetooth 5.1 technology, which greatly improves the transmission speed, you can enjoy a super low latency gaming experience and a high-quality call experience. 【Hi-Fi Stereo Sound Quality】These music earphones with 13mm speakers and triple-layer composite diaphragms provide powerful bass, stunning treble and clear mids. These earbuds are designed for sound and music lovers. It can support the mono mode and twin stereo mode, you can share the earbuds with your friends and families. Each earbud has a build-in microphone for phone calls. 【Sports Wireless Earbuds & Ergonomic Earphones】The surface shape of wireless earbuds perfectly fits the curve of inner contour of ear, which is more comfortable to wear. Whether you' re running or jumping, the earbuds will stay in ear securely.