Bluetooth 5.3 and One-Step PairingT19 wireless earbuds uses Bluetooth 5.3 technology signal transmission faster, more stable and lower latency. After connecting for the first time, when you use the wireless earbuds in the future, you only need to open the charging case and it will be paired automatically.40 Hours Playing Time and LED Digital Display :Earphones wireless bluetooth feature a smart digital LED display that accurately displays the remaining power in digital format.The earphones wireless bluetooth can last 7-8 hours playtime from a single charge, the included charging case provides an additional 5 charges and provides total 40 hours.HIFI Stereo Sound & Superior Clear Call:The wireless earphones with built-in 13mm speakers high-quality audio chip can keep the original sound of the music to the greatest extent, delivers a superb feast to the ears with rich sound details, strong bass, mellow mids, and exquisitely carved treble,offer superior HiFi sound quality. Each earbud has a build-in microphone for phone calls. CVC noise reduction can make others hear your voice very clearly while phone calls.Touch Control: Wireless earbuds bluetooth allow you to conveniently play/pause, answer calls, skip music at the touch of a button. Even if the phone is placed in a pocket without worry about everything during working, travel or exercising.Lightweight and Ergonomic Design:These earbuds adopts comfortable wearing design, close to the contours of the ears, and use lightweight ABS material to help reduce pressure on ears.These wireless bluetooth headphones are small and light, single earbud is only 0.13oz, charging case size is 2.3*2.16*1in, Its more convenient to carry.