About this item 14.2mm Drivers Stereo Sound, Crystal Clear Calls Q38 wireless earbuds Bluetooth uses AAC or SBC audio decoder and 14.2mm graphene moving coil unit, and the frequency bandwidth is increased by 45 percent . 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 80 percent of the sound, making the call clearer. New Bluetooth 5.3The 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. 48 Hrs Battery, Dual LED DisplayOur wireless earphones over ear charging case with LED power display shows remaining power in percentage. Charging case presents its battery from 1 percent -100 percent 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 WaterproofUnlike 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 or M or 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 CompatibilityMulti-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 or Android 5.0 or later. Therefore, no tangled wires are bothered, and you will enjoy the convenience brought by these sport earphones.