New Bluetooth 5.3 & One-step Pairing: Adopting the latest Bluetooth 5.3 chip technology, the dual-channel transmission technology is 200% more stable than the 5.2 version, and the transmission speed is increased by 80%, achieving low latency and low power consumption. The wireless earbuds have a transmission distance of up to 15 meters, so whether you are making a call or exercising, you don't have to worry about signal interruption. After the first pairing, the earbuds only take 0.1S to automatically pair with the phone.Excellent sound quality and ENC noise reduction: The earphones wireless Bluetooth has a 13mm graphene voice coil diaphragm and improved AAC/SBC audio encoding, which enhances the bass by up to 60%. The wireless earphones environmental noise cancellation (ENC) and 4 HD microphone technology can reduce ambient noise by more than 40 decibels, ensuring that your voice can be clearly heard on the other end. With a 13mm graphene voice coil diaphragm and improved AAC/SBC audio encoding, it can enhance the bass by up to 60%.Universal Compatibility & Touch Functionality: The Bluetooth headset can be easily paired with iOS and Android devices (Bluetooth-enabled laptops/tablets/Windows Smart TVs). In addition, the S2 Bluetooth in-ear headphones are equipped with sensitive touch controls: just tap the earbuds to play/pause music, change tracks, adjust volume, answer/end calls, and wake up the voice assistant.48-Hour Battery Life & Fast USB-C Charging: The dual LED indicator shows the charging status of the Bluetooth headset. The wireless Bluetooth headset can play up to 8 hours of music on a single charge, and the battery life of the charging case is up to 48 hours. Thanks to the USB-C fast charging technology, you can enjoy an impressive 1 hour of playback time with just 10 minutes of fast charging, and you don't have to worry about battery life.Comfortable to Wear: The ergonomic design of the Bluetooth headset has been tested thousands of times on the Bluetooth earbud channel to ensure a comfortable fit and no ear pain even after long-term use. A single sports wireless Bluetooth earbud weighs only 4 grams, so it will not feel oppressive even if worn for a long time. It also comes with three different sizes of earmuffs (S/M/L) to fit the ear canal perfectly, allowing you to listen to music comfortably for a long time.IP7 Waterproof: The wireless earphones are nano-coated and certified by IP7 waterproof and sweatproof standards to prevent sweat and rain, ensuring the long life of the wireless earphones, making them the perfect companion for sports, running, yoga, cycling and other activities.