Product detailsF9-8?Up-graded?Bluetooth 5.1 Wireless headphones Touch Control with 2000mAh Charging box IPX7 Waterproof of Hifi Stereo Headsets in-ear Built-in Mic Earphones Premium SoundDescription:??Balanced,Immersive Sound?:wireless earbuds with the built-in high-quality audio chip?deliver Hi-fi sound quality, achieving the sound of the immersive music scene surround sound.??Battery LED Display?:The bluetooth earphone in ear of the new model has a Battery LED display function .By touching the button you can easily read the power of the box, without worrying about the power outage of the box. one-button operation, play pause, answer hang up, summon Siri, switch songs.??Waterproof & Ergonomical Design?:waterproof level can easily resist sweat and water, and you don’t have to worry even if it rains.Equipped with three different sizes of soft silicone ear tips (S, M, L), These sport headphones are very suitable for outdoor sports, workouts whole day, just enjoy yourself !??True Wireless Earbuds with Box? : Mini box and easy to carry, true wireless connection and charging.Mini box can do mobile phone bracket (The box has a USB interface to your other devices urgently)?[Customer Experience] :We check products at every level before out of storage. If you encounter any problems, please contact us in time, because we focus on providing each customer good shopping experience.Product parameters:? Product model:F9-8? Bluetooth version: V5.1? Support Agreement: Supports HFP 1.7HSP1.2, A2DP 1AVRC1.65SPP 1.2 and PBAP1.0? ?Chip solution: BT8812A? Working distance: 10m? Talk time: 5-6H (earbuds fully charged single use) (120Hours with charge case)? Music playback time:?5-6H (earbuds fully charged single use) (120Hours with charge case)? Standby time: 650H (requires matching charging compartment)? Frequency range: 2402MHz~2480MHz? Battery type: 3.7V, >50mAh Lithium-ion polymer battery? Headphone charging time: 1-2H? Working temperature: -10 ?C-55~C? Input current: 5V–1A? Output current: 5V–1A? Battery type: 3.7V, 2000mAh Lithium-ion polymer battery? Charging battery capacity: 2000mAh? Charging bin charging time: 1-2H