, 【Ultra-Lightweight & HiFi Stereo Sound】 Features an ergonomic design, each wireless earplug weighs only 4 grams, which is stress-free for long-term wear;And using high-definition rendering technology & built-in dual high-quality microphones and Installed with Apt-X technology,provide CD-like audio quality, At the same time,wireless earbuds provides powerful, low-bit rate transmission and scalability for free lossless audio,Experience music, movies, podcasts, calls and more in a whole new way. , 【One-Step Pairing & V5.2】 :After being paired the first time,When using again, Simply take the wireless earbuds out of the charging case and they will automatically connect to your phone.wireless earphones use Bluetooth 5.2 for a fast and ultra-stable connection(33ft of obstacle-free range). , 【Smart Control 】:Together with smart touch sensors, D28 wireless earbuds can get ultimate control .You can use real bluetooth earphones to achieve +/- volume, play the next/previous song, answer/reject calls, activate Siri and other functions, making your life more convenient . , 【USB-C Fast charge& Great Battery Life 】The blutooth earphones using USB-C Cable can be quickly charged, which can be fully charged for the headset in about 1 hour. Once time charge could be listen music all the day.The standby time up to 120 hours. , 【 Waterproof & LED Display for power】:D28 in ear earphones by using nano-coating materials, wireless headphones have a high degree of waterproof protection, can easily prevent Slight sweat/rain, which is very suitable for exercise. And allows you to see how much charge the charging case ,so you can know when is the best charging time for the charging case.When the last grid flashes, this means that the Wireless headset needs to be charged.