【Latest Technology Bluetooth 5.3 & Hi-Fi High-Quality Sound】These earphones, featuring a new design and the latest technology, have been developed based on years of experience in earphone manufacturing. Equipped with the latest Bluetooth 5.3 chip and a new generation EDR chip, they significantly improve data transfer speed and connection stability, addressing the instability issues of Bluetooth. They maintain stable communication even in crowded places, stations, and subways, and offer automatic pairing (after the first connection). Sound skipping and interruptions are minimized, and sound quality and latency are greatly improved, which are already basic features. The Bluetooth and EDR chips create a good calling environment, cutting out surrounding noise during calls and transmitting only clear call content to the other party. With the same music, you can enjoy a better experience with our Bluetooth earphones. This product not only has Hi-Fi technology, but also every tone is adjusted by a professional tuner, resulting in deeper bass, clearer mid-range, and more pronounced treble. 【40-Hour Playback with 1200mAh Large Capacity Battery】The wireless earphone charging case is equipped with a 1200mAh large-capacity battery, providing more than twice the music playback time compared to ordinary Bluetooth earphones. Each earphone can play music for 6-8 hours, and with the charging case, a total of up to 40 hours of use is possible. You can use them all day without worrying about running out of battery. Furthermore, the standby time is approximately 120 hours. 【High-Definition LED Display】The glossy egg-shaped case features a blue display, creating a luxurious design. The remaining battery level is displayed numerically on the LED display, with the case showing increments from 100% to 1%, and the earphones displaying on a 4-segment LED display. Designed for everyday use, these are the perfect Bluetooth earphones for a gift. 【High Sound Isolation Bluetooth Earphones & Automatic Connection】No need to take out these Bluetooth earphones. After connecting manually for the first time, they automatically power on and connect when you open the lid upon subsequent use, with just one step. They provide a more comfortable user experience than other earphone models with the same specifications.