No Wires, No Limits: Total-Wireless Earphones with graphene-enhanced immersive sound. Graphene-Enhanced Sound:Iyesku stereo earphones adopt Pioneering audio technology which delivers jaw-dropping clarity and treble. A sound-tight seal ensures deep bass and exceptional isolation. Enjoy music the whole day: Get 3.5 hours of playtime from a single charge, boosted to 12hrs with the included charging case. Waterproof for your exercise: these Bluetooth earphones are sweatproof and water resistent. Perfect for your gym and daily exercise.Perfect sports earpieces. Universal Comfort: eartips are engineered from a super-soft liquid silicone for exceptional in-ear comfort.With tips in multiple sizes to ensure everyone has a perfect listening experience.