Bluetooth Earphones, LED Digital Display, True Wireless， In Ear Noise Reduction Sports Earphones Features: Powerful features: -Control design, easy to use, phone calls and control music play by -field. for in car calling and chatting, play games or working use comfortable and your ears when using, Smaller and More Invisible. Mixture active noise reduction - equipped with a new noise reduction chip, it brings powerful noise reduction computing power, monitors internal and external noise in real time, and intelligently generates the opposite signal to cancel, effectively eliminating external environmental noise and low-frequency noise. BLUETOOTH 5.1 all Bluetooth-enabled devices. Instantly connected to your smartphone or tablet from up to 66 feet away（20m). Longer music / talk time: wireless headset with built-in rechargeable lithium polymer battery can be used continuously for up to 3-4 hours at volume Product Description: Transmission range: 10 meters Bluetooth protocol: 5.1 Battery life: 4-8 hours (hours) performance: for daily use The product includes: Bluetooth earphones * 1 Bluetooth earbuds; wireless earbuds; earbuds wireless bluetooth earbud & in-ear headphones; wireless bluetooth earbuds bluetooth wireless earbuds; wireless ear buds; wireless bluetooth earphones sports headphones; waterproof headphones headphones wireless bluetooth; bluetooth headphones