[Bluetooth 5.1 & one-step pairing] Adopt advanced Bluetooth 5.1 technology, greatly increase the transmission speed, and provide you with a low-latency listening experience. Just pick up 2 Bluetooth headsets from the charging box, and they will automaticallyconnect (after the first pairing), allowing you to immerse yourself in rich stereo. [High-quality sound and noise reduction] The 10mm dynamic driver not only provides powerful deep bass, but also crystal clear sound. Each headset has two built-in microphones that work together to reduce noise and make calls with a stable signal and lowpower consumption. Built for business and entertainment. [Touch & Fashion Design] The wireless earbuds use advanced touch technology and are equipped with a high-sensitivity touch sensor. You can easily play/pause/skip music, answer/hang up/reject a call or start a voice assistant with a single tap. . Thiswireless headset is not only excellent in performance and easy to use, but also has a unique and stylish design. People of every age will absolutely love it. After connecting the Bluetooth of the mobile phone, touch any earphone for 2 seconds to switch the noise reduction/transparency mode. In-ear detection: Put on the earphones to play music automatically, and take off the earphones to automatically pause the music. Answer/hang up: When a call comes in, touch any earphone to answer/hang up the call at once. When a call comes in, long press any earphone 2S to refuse to answer the call. Pause playback: Click the left and right earphones to pause/play music. Previous/Next: During music playback, double-click the left earphone to complete the previous song operation. During music playback, double-click the right earphone to complete the next song operation. Volume addition and subtraction: Tap the left earphone three times to increase the volume. Tap the right earphone three times to decrease the volume. Colour: Black 1. Take out 2 Bluetooth headsets from the charging box, the headsets will automatically start pairing. 2. Enter the Bluetooth settings of the mobile phone or other device, and perform Bluetooth pairing. 4. The left and right iphone earphones can be connected to different devices respectively.