[【2023 New Bluetooth 5.3】The Bluetooth 5.3 chip and high-sensitivity FPC antenna ensure that the headphones connects quickly and stably within 15 meters with lower latency and lower power consumption. Supports Bluetooth protocols such as HSP HFP A2DP and AVRCP. After pairing the devices for the first time the Bluetooth headphones will automatically connect when you take them out of the charging case. 【13mm Drivers Stereo Sound Crystal Clear Calls】Rulefiss New Q38 wireless earbuds Bluetooth uses AAC/SBC audio decoder and 13mm graphene moving coil unit and the frequency bandwidth is increased by 45%. Instruments are well-detailed mids are full and high pitch (20Hz-20kHz) is punchier with excellent dynamic range and accuracy. At the same time the Bluetooth earbuds have built-in 2 clear microphones and CVC 8.0 technology they can retain 85% of the sound making the call clearer. 【48 Hrs Battery Dual LED Display】Our wireless earphones over ear charging case with LED power display shows remaining power in percentage. Charging case presents its battery from 1%-100% to let you know the current power status of your running headphones and charging case anytime anywhere. Up to 6-8 hours playtime of normal usage on a single charge and boost that to 48 hours playtime with the 800mah compact charging case. With type-C quick charge it only takes 1.5 hrs to charge the case. 【Comfortable Sports Earhooks IP7 Waterproof】Unlike most sport headphones Q38 sport wireless headphones are designed with a soft ultra-light and flexible 45° earhook structure which can fit your ears smoothly. And a single earbud is as light as 7g equipped with 3 different sizes of high-quality silicone earplugs (S/M/L). Also with IP7 certified waterproof technology you can protect the sport earbuds from sweat and rain during sports or daily use. Best choice for workout running gym. 【Smart Touch Control Wide Compatibility】Multi-function touch panel on each earphone helps to play pause adjust volume answer end calls activate siri and google assistant more convenient. This Bluetooth earphones is compatible with smartphones tablets and laptops that use iOS 9.0/Android 5.0 or later. Therefore no tangled wires are bothered and you will enjoy the convenience brought by these sport earphones.]